Hearthstone: Heroes of Warcraft

Hearthstone: Heroes of Warcraft

Logo of Hearthstone: Heroes of Warcraft
Developer(s) Blizzard Entertainment
Publisher(s) Blizzard Entertainment
Composer(s) Peter McConnell
Series Warcraft
Engine Unity
Platform(s) Microsoft Windows, OS X, iOS, Android
Release date(s)

Windows, OS X

  • WW March 11, 2014

iOS

  • WW April 16, 2014

Android

  • WW December 15, 2014
Genre(s) Collectible card game
Mode(s) Single-player, multiplayer

Hearthstone: Heroes of Warcraft is a free-to-play online collectible card video game developed and published by Blizzard Entertainment, released worldwide on March 11, 2014. Hearthstone builds upon the lore of the Warcraft series, using characters, creatures, and relics from the series. Initially released for Microsoft Windows and OS X personal computers, Hearthstone also supports iOS and Android devices, and features cross-platform play, allowing users on any device to compete with each other, restricted only by geographical region account limits.

The game is a turn-based card game between two opponents, using constructed decks of thirty cards along with a selected hero with a unique power. Players use mana points to cast spells or summon minions to attack the opponent, with the goal to reduce the opponent's health to zero. Winning matches can earn in-game gold, rewards in the form of new cards, and other in-game prizes. Players can then purchase new cards through gold or microtransactions and use these cards to customize and improve their decks. The game features several modes of play, including casual and ranked matches, as well as daily quests and weekly challenges to help earn additional gold and cards. New content for the game involves the addition of new card sets and gameplay, taking the form of either expansion packs or single-player adventures that reward the player with collectible cards upon completion.

In contrast to other games developed at Blizzard, Hearthstone was developed by a smaller team as to develop an experimental game based on the general appreciation of collectable card games at the company. The game was developed to avoid pitfalls of other digital collectable card games through a number of elements, such as eliminating any possible plays from an opponent during a player's turn and by replicating the feel of a physical card game within the game's user interface.

The game has been favorably reviewed by critics and proven successful for Blizzard. By April 2016, Blizzard has reported more than 50 million Hearthstone players. The game has become popular as an eSport with cash-prize tournaments hosted by Blizzard and other parties.

Gameplay

Hearthstone is a digital-only collectible card game that revolves around turn-based matches between two opponents using pre-made decks of cards.[1] Players can choose from a number of game modes, with each offering a slightly different experience. Players start the game with a substantial collection of basic cards, but can gain rarer and more powerful cards through purchasing packs of cards or as rewards from specific game modes. Hearthstone is purposely designed to exclude card trading, instead allowing players to disenchant unwanted cards into a quantity of arcane dust, which can then be used to craft new cards of the player's choice. Players customize their decks with any gained cards to improve their chances of winning and gaining further rewards.

Hearthstone is free-to-play, only requiring the player to download the game client for their computer or device after setting up a free Battle.net account, while ongoing development and support of the game comes from micropayments. Players can obtain in-game gold by winning matches and completing daily quests, such as completing a number of matches in ranked play with a certain hero class. A player can have three active daily quests which carry over until completed or rerolled by the player. Gold is used towards the purchase of new booster packs, entry tickets for arena and adventure modes, and alternative hero and card-back skins.[2][3] Alternatively, players can spend real money to purchase these items directly.[1] Hearthstone is set within the Warcraft universe, with its characters, spells and locations drawing from existing lore.

Matches

An example of gameplay in Hearthstone: Heroes of Warcraft. Players play cards from their 'hand' such as minions, spells and weapons to interact with the game board and their opponent.

Each Hearthstone match is a one-versus-one battle between two opponents. Gameplay in Hearthstone is turn-based, with players taking turns to play cards from their hand, casting spells, equipping weapons, or summoning minions to do battle on their behalf, limited by the amount of filled mana crystals they currently have. Unlike card games like Magic: The Gathering, the opposing player has no means to interactively interrupt or counter the current player's action during their turns, though may play cards on their turn that will create events that automatically respond to the other player's actions, which are automatically handled by the game. Games may be between two players, or one human player and one computer-controlled opponent. Each player's turn is limited by a real-time timer, pausing only during card animations; the player is warned when this countdown is nearly over. If the countdown ends before they complete their turn, they forgo any further actions and their turn otherwise resolves normally. Players can end their turn at any time, and the game will indicate when a player has no further actions available to them and prompt them to end their turn.

Each player is represented by their chosen 'hero', an important character from Warcraft lore. Each hero represents a particular class, determining the cards and unique hero power available to the player. Each hero has 30 health - if that number is reduced to zero, the hero is destroyed and the controlling player loses the game. The nine available classes, along with their hero names, are Mage (Jaina Proudmoore, Medivh or Khadgar), Priest (Anduin Wrynn), Warlock (Gul'dan), Paladin (Uther the Lightbringer or Lady Liadrin), Warrior (Garrosh Hellscream or Magni Bronzebeard), Druid (Malfurion Stormrage), Hunter (Rexxar or Alleria Windrunner), Rogue (Valeera Sanguinar) and Shaman (Thrall).[4] Players can choose to play using one of several pre-assembled decks or a deck of their own making. While many cards are available to heroes of any class (the neutral cards), a substantial portion is limited to a specific class, giving each hero their own strengths and unique possibilities.

At the start of the game, each player draws cards from their respective deck of thirty cards. The first player draws three cards while the second player draws four. Next, the players enter the "mulligan phase." In this phase, both players can return any number of cards back to the deck and redraw the same number of cards. At the end of the mulligan, the second player gets another card called "The Coin," a card that gives a single use mana crystal for one turn. Despite the second player's two card advantage, lead designer Ben Brode claims that on average the first player has a 3% higher chance to win, and Ars Technica's analysis of three professional tournaments yielded an insignificant edge to the first player.[5]

A player is required to draw a card at the start of their turn; if they have run out of cards, their hero takes an increasing amount of damage on each successive turn. During their turn, each player may choose to play any of their cards, use their hero power, command their minions to attack targets, or attack directly using their hero, if they have a weapon equipped. However, which actions the player is able to take is partly determined by their mana, a resource pool which is refreshed at the start of each turn. Each player starts the game with zero mana crystals, and gains one at the start of each turn up to a maximum of 10 mana. Each card and hero power requires the player to use a specific amount of mana in order to play it, strategically limiting each player's actions. The larger mana pools in later rounds allow players to play increasingly expensive cards or complex card cominations, opening the game up to more powerful minions and abilities.

Minion cards each have an attack and a health value; when a minion attacks a target, it will deal its attack value to that target's health. Unlike Magic, a minion's health does not regenerate at the start of the player's next turn, so minions can be destroyed after taking smaller amounts of damage over several turns. Minions normally cannot attack the turn they are put into play though can be attacked on the opponent's subsequent turn, and once in play can only attack once per turn. A number of keywords affects the behavior of minions from these basic rules: examples include those with "Taunt" that must be targeted before any other minion or the opposing hero can be targeted, and those with "Charge" can attack the turn they are brought into play. Other keywords define actions to be taken at specific events: minions may have "Battlecry" events that only trigger when they are brought into play and "Deathrattle" events that occur when the minion is killed. Minion positioning on the game board can be important as some minions and spells will affect adjacent minions. Other minions and spells can influence minions that are denoted by a specific type, such as "beast", "demon", or "mech" classifications.

A match is concluded when one or both players has/have reached zero health, or if a player chooses to concede. Completing a match will grant each player hero experience, within more experience gained by the winner, and grant them access to additional basic cards up to level 10 for that hero or golden versions of basic cards past level 10; once all heroes are level 60, the player will have every golden version of the basic cards.

Each match takes place on a randomly selected battlefield, representing the board on which the game is played. Several of the battlefields are inspired by the lore of Warcraft or based on the games' expansions. Each battlefield features its own design and numerous interactive elements, but gameplay is in no way affected or determined by battlefield selection; the differences are purely cosmetic. Around the battlefield are the game's important user interface elements, which are each player's hand, deck, hero's portrait, hero's power, mana crystals, the log of recent cards played/actions taken and each hero's summoned minions. The player may use six pre-set emotes to engage in basic communication with their opponent. Text-based messages may be exchanged with the opponent if one player is added to the other player's Battle.net friends list. Similarly, players can observe other Battle.net friends while they are in a match.

Cards

In the card interface, players can create and edit their decks from existing cards, as well as 'disenchant' and create new cards.

Cards are the main substance of Hearthstone, representing the abilities, characters and effects which each player is able to make use of during the match. On release, the game consisted of the same Basic set of cards that all players begin with and earn through leveling up all the individual heroes. All additional cards are generally gained by winning or buying card packs in the game; each card pack consists of five random cards, including at least one rare card.[1] On Hearthstone's release, purchased cards and packs would be from the Classic card set, while with the release off each expansion or Adventure, cards and packs from that expansion could also be gained (though with the introduction of Standard vs Wild format, packs from non-Standard expansions could no longer be purchased). Reward cards, not considered part of Standard play, are earned by completing meta-game quests within the game such as collecting all of the classic set's murloc cards. As of April 2016, there are 877 unique collectible cards in the game, with more planned to be added in the future through additional expansion packs and adventures.[4] Not all cards in the game are collectible in a player's library, as some cards are created as effects from other cards or spells, while others are unique to specific Adventure or Tavern Brawl game modes.

In all game modes except Arena and some of the weekly Tavern Brawls, the player does battle using a deck of 30 cards constructed from cards in the player's collection, using any mix of common cards available to all classes and specific class-based cards set by the chosen Hero. Each deck can only feature two of each card, and only one of each legendary card. Legendary cards are the rarest cards in Hearthstone and are based on special characters that played an important role within the Warcraft world. When summoned, Legendary cards will play a special animation or sound and will also have a dragon border around them. Arena play features no such limitations, but requires players to play using a new deck chosen from a series of randomly provided selections.

The construction of a player's deck is a key strategic element in the game, determining which cards are available to them during the course of a match. The game gives each player a pre-made deck for each Hero type using the game's Basic cards, allowing them to get a quick start in the game. The game provides a few deck recipes for each hero type that are based on various successful deck archetypes, allowing the player to popular what cards they already own to fit the recipe. Hearthstone offers a deck construction helper to guide new players on selecting a good range of card types and values, or to finish off decks that are partially completed.[6] The player has the ability to create up to 18 custom decks, upped from 9 before the release of the Whispers of the Old Gods expansion.[7]

Beside purchasing card packs, players can use the crafting system to create new cards. The system uses arcane dust to craft specific cards. Arcane dust can be obtained by destroying existing cards, allowing players to convert unwanted or surplus cards into more desirable cards, from arena mode rewards or from end of season rewards. Because card used in one of the player's constructed decks are still available to be used in another deck, a player only needs a maximum of two copies of any regular card or one copy of a legendary card in their collection, and the game can automatically convert extras into arcane dust. The crafting system was created as an alternative to the player card trading prevalent in trading card games such as Magic: The Gathering,[8] with no plans for cards to be traded between players.[9] Similar to the foils found in physical collectible card games, Hearthstone features golden cards that are special versions of regular cards featuring a golden border and unique animations. These cards are less common than the regular ones and are worth more arcane dust. Golden cards differ from their regular counterparts purely cosmetically and are designed to allow players to show off their special cards to others.[10]

With the introduction of Old Gods and the Standard and Wild ranked play format, older expansions such as Naxx and GvG are no longer available to purchase, although players that have purchased past adventures can still earn cards by completing the single player challenges, and individual cards can be crafted through arcane dust.

At times, Blizzard has altered the attributes and effects of certain cards after their release based on observations from gameplay, such as to prevent unforeseen game-breaking combination attacks that would be over-used by players. Many of these changes are "nerfs", reducing the effectiveness of the card's ability, while there have also been some "buffs" that improve cards. These changes are retroactive, affecting all existing cards owned by players.[11][12]

Releases

The following table lists the card releases by their type or expansion name, their North American date of release (with release in other regions typically with the day or two afterwards), the date of the expansion's removal for purchase (though cards can still be crafted), and the distribution of cards within that release. Where two numbers are given, the first number represents the number of different cards types overall or of that rarity in that release, and the number in parenthesis is the maximum number of different cards including duplicates that the player can use.

Collectible cards breakdown
Set Release type Release date Removal date
from Standard format		 Total
(max possible)		 Common Rare Epic Legendary
Basic Core March 11, 2014 N/A 133 (266) N/A N/A N/A N/A
Classic Core March 11, 2014 N/A 245 (457) 94 (188) 81 (162) 37 (74) 33
Reward Core March 11, 2014 April 26, 2016[lower-alpha 1] 4 (5) 0 0 1 (2) 3
Curse of Naxxramas (Naxx)[13] Adventure July 22, 2014[14] April 26, 2016 30 (54) 18 (36) 4 (8) 2 (4) 6
Goblins vs. Gnomes (GvG) Expansion December 8, 2014[15] April 26, 2016 123 (226) 40 (80) 37 (74) 26 (52) 20
Blackrock Mountain (BRM)[16] Adventure April 2, 2015[17] TBD 31 (57) 15 (30) 11 (22) 0 5
The Grand Tournament (TGT) Expansion August 24, 2015[18] TBD 132 (244) 49 (98) 36 (72) 27 (54) 20
League of Explorers (LoE) Adventure November 12, 2015[19] TBD 45 (85) 25 (50) 13 (26) 2 (4) 5
Whispers of the Old Gods (Old Gods)[20] Expansion April 26, 2016[21] TBD 134 (247) 50 (100) 35 (70) 28 (56) 21
All released cards 877 (1641) 291 (582) 217 (434) 123 (246) 113
  1. ↑ Two of the four possible unique reward cards were removed on the introduction of Standard Play.

Game modes

Five game modes are available to play in Hearthstone.

Game regions

Hearthstone offers play in four different geographical regions: Americas, Europe, Asia and China. Players can only compete and communicate with other players within the same region. While each player is by default assigned to a region loosely corresponding to their registered country of residence, players are able to switch regions within the Battle.net launcher, allowing them to play against those of other regions if they wish, although players from other regions are unable to select the China region for play on the same device. Each region holds a separate profile for each player, and it is not possible to transfer cards, gold, friends lists or other details between regions. Players wishing to play in a new region therefore have to begin the game from the start, including replaying the tutorial.

Development

Hearthstone interface designer Derek Sakamoto presents at GDC 2015

Development of Hearthstone at Blizzard was inspired by two directions, according to developer Eric Dodds: a desire for Blizzard to develop something more experimental with a smaller team in contrast to their larger projects, and the shared love of collectible card games throughout the company.[32] Blizzard executives, around 2008, had considered that their revenue was primarily sustained on three well-established properties (the Warcraft, StarCraft, and Diablo series), but saw the rise of small independent developers with highly successful projects, representing a shift in the traditional video game model. To explore this new direction, Blizzard brought a number of people into "Team 5", so-named as it was the fifth development team formed at Blizzard.[6] Initially, the team had between 12 and 15 members, in contrast to other Blizzard games with teams in excess of 60 members.[32] By November 2015, the team had 47 members.[33]

Of the game types they explored, Team 5 soon focused on the collectible card game approach, given that many on the team and in Blizzard had played such games since their introduction.[6] The team found it natural to build the card game around the existing Warcraft lore; according to production director Jason Chayes, Warcraft was already a well-known property, and the depth of characters and locations created for other games in that series made it easy to create cards inspired by those. They also saw that new players to Warcraft may be drawn into the other games through playing Hearthstone.[34] The team was able to pull concepts and art from the pre-existing World of Warcraft Trading Card Game, first published in 2006 by Upper Deck and later by Cryptozoic Entertainment; when Hearthstone was near completion, in 2013, Blizzard terminated its license with Cryptozoic as to favor their pending digital card game.[6] The addition of heroes, an aspect from the previous trading card game, was found to help personalize the game for the player to allow players discover useful combinations of cards for each hero.[34][6]

After about a year of starting development, the team had produced an Adobe Flash prototype of the game that offered the core card game mechanics and Heroes. At this point, several on Team 5 were temporarily moved into other teams to complete the release of StarCraft II: Wings of Liberty. This 10-to-11 month period was considered fortuitous by the team, according to Chayes. First, principle designers Dodds and Ben Brode remained on the development of Hearthstone, and the two were able to quickly iterate many ideas using both the prototype and physical replicas to fine-tune the game mechanics. Secondly, those that were put on StarCraft II came back with ideas based StarCraft's asymmetric gameplay to help balance the various heroes while still creating a unique characterization and play-style for each.[6]

Further development on the game's user interface began using the principle that the game needed to be both accessible and charming, being able to draw in new players and to be clear how to play the game.[6] Dodds stated that "it’s important that you don’t have to spend a lot of time understanding the rules to play the game, the depth grows as you go."[6] Gameplay elements such as pre-made decks for each hero, deck building helps, and visual cues on which cards could be played were used to guide new players. Card text was written in a way so that a new player should be able to immediately understand the effects.[6]

From the beginning, the game was designed to be played solely online and to mimic the feel of physical cards, as to make it more accessible to new players. Dodds found that past attempts to digitize physical card games by other companies left areas they felt were lacking, and wanted to improve on that experience.[32] One particular example are card games where players have the ability to react to other players; Dodds noted that when playing in the same room as another player, these types of interactions are straight-forward, but consume a great deal of time in a virtual space. Hearthstone was designed to eliminate the reactions from the opponent during the player's turn, streamlining the game.[34]

Other aspects of the game's interface were set to replicate the feel of a physical game being watched by an audience: Hearthstone starts with the player opening a box, during gameplay the cards waver and move while in their hand, and cards when played slam down on the board. When attacking, cards leap across the board to strike the target; when a massive spike of damage is dealt, the board shakes; when a massive creature is summoned, an unseen audience gasps in awe.[34] Hearthstone also offers interactive boards. The boards on which the cards are played can be interacted with in various ways, such as virtually petting a dragon, although the feature is purely for entertainment and has no effect upon gameplay.[34] This idea came out from the movie Jumanji in which a board game comes to life, and also mimics how physical card players would often toy with their cards while waiting on their opponent.[35]

Unlike physical trading card games or other digital ones, Hearthstone was designed early on without any trading system between players. Hamilton Chu, executive producer of Hearthstone, stated that "a key thing for us was focusing on [the user]... playing the game", and that trading and market features would dilute this experience.[36] Blizzard wanted to do things such as avoid a free market where card values could fluctuate, discourage cheating methods like bots and duping, reduce the unauthorized third party sales (all against the terms of use), and keep the profit derived from the game for the company.[37]

The game's name, Hearthstone, was meant to imply to a close gathering of friends by a hearth, a goal of what they want players to feel.[34] According to Chayes, they had experimented with other constructs of where these card games would take place, and only about halfway through development came onto the idea of using a pub's hearth as the theme; Chayes stated that with that concept, "this is a great way to play, it works with all our values, it has a lot of charm".[35] To maintain a friendly environment around this construct, they added in the ability to trigger one of a few friendly compliments said by the Hero, so that players could still emote to their opponent without having to worry about any vitriol.[35]

Internal beta testing of the game within Blizzard began in 2012. A closed beta was launched in August 2013, while the game was put into open beta in January 2014.[35] These beta testing periods were used to evaluate the game's balance, adjusting cards they found to be too powerful or too weak, and making sure no single Hero or deck type dominated the game.[35] As they approached the game's release in March 2014, Blizzard found that it was hard to generate interest in getting people to try the game, believing that once they tried it they would be drawn into the game; those they asked to try the game felt that Hearthstone wasn't the type of game they would be interested in playing. At this point, Blizzard opted to make Hearthstone free to play supported by microtransactions for less-patient players. This helped to significantly boost the game's popularity on its release.[35]

The soundtrack was composed by Peter McConnell; with trailer music by Jason Hayes.[38] According to McConnell and Dodds, who oversaw the music direction, they wanted to create a soundtrack that would reflect the tavern setting they had established for the game, but they did not want to overwhelm this theme. McConnell came upon the idea of mixing Celtic music with blues rock—pondering the idea of "what if ZZ Top or Golden Earring had been transported back in time to the Middle Ages?"—and working in other previous Warcraft themes among the new songs with help from Hayes.[38] Hayes also worked with Glenn Stafford to create short "stingers" of music used when players summon Legendary cards.[38]

Expansions and updates

Blizzard experimented with cross-platform play during development, having successfully played a game on PC against a player on an iPad; however, it was not a feature at launch.[9] Cross-platform play was added in April 2014.

Blizzard provides regular bug fixes, updates, and expansions for Hearthstone. Hamilton Chu, the executive producer for Hearthstone, stated that Blizzard intends to support the game for ten to twenty years, similar to Blizzard's other titles, though they have no long-term plan of how they would introduce cards.[39] Senior designer Mike Donais noted that their approach to the expansions to the game is based on the current atmosphere around the Hearthstone community. As an example, "The Grand Tournament" was developed with a new card mechanic for minions called "Joust" which has combat between a minion with Joust with other minions based on the casting cost of the minions, rather than their attack and health. Donais noted that while this also created a central theme for "The Grand Tournament" expansion, it also served to help combat "aggro" decks—decks filled with low-cost minions that could be quickly deployed—which at the time of the expansion's release, were extremely popular and found to be discouraging to many players.[39]

Adventures, single-player game modes featuring "boss" fights, have also been released. Adventures offer rewards in the form of new cards, with each adventure introducing 20-45 new cards. Adventures were initially designed about before the game's release as a means to introduce new cards around a given theme or gameplay mechanic. Though they had in mind plans for releasing expansion packs, putting all the cards out into play at one time, they thought about a staged roll-out using the Adventure approach, as to avoid jarring the player community with a mass introduction of cards. They found that with the weekly approaches used during the first Adventure, "Curse of Naxxramas", the meta-game remained unpredictable both during and for several months, helping to keep the playing community interested in the game. The solo challenges on Adventure mode also served as a means to help players understand some of the stronger archetypes of card decks and learn strategies to defeat them, making them better players against human opponents.[40]

Hearthstone also features expansion packs, which contains between 100-200 new cards, as well introducing new features.[41][42][43] The Tavern Brawl mode was in development for over a year before it was released in June 2015; the feature went through many iterations before the team was satisfied.[44] Dodds equated the Tavern Brawl mode as a place to try experimental mechanics that may later be introduced to the game, as well as to offer gameplay that varies significantly from other areas of play within Hearthstone.[45]

The introduction of the Standard vs. Wild formats in April 2016 was an issue that the developers knew since Hearthstone's initial release that they would need to address; according to Brode, as new cards were introduced to the game, they recognized that new players would start to find the game inaccessible, while adjusting the balance of the meta-game of which cards from previous expansions had proven over- or underused.[46] The ideas for how to actually implement Standard mode started about a year before its introduction. Though they will continue to design the game to maintaining the appropriate balance for the Standard format, they will also monitor how future cards will impact the Wild format and make necessary changes to keep that mode entertaining.[46]

Release

Hearthstone was first announced at Penny Arcade Expo in March 2013 for Windows, Mac, and iPad, with an expected release date in the same year.[47][48] In August 2013, the game went into closed beta, to which over one million players had been invited as of November 8, 2013,[42] with plans to enter open beta in December.[49][50][51] Blizzard continued closed beta into mid-January 2014 despite their original estimation.[52] Blizzard announced open beta for North America on January 21, 2014.[53] Open beta was announced for Europe on January 22, 2014[54] and on January 23, 2014 open beta was made available in all regions.[55]

The game was released on March 11, 2014,[56] available on Microsoft Windows and OS X operating systems. By the end of March 2014, the game had more than 10 million player accounts registered worldwide.[57] On April 2, 2014, the game was released for iPad in Australia, Canada and New Zealand.[58] On April 16, 2014 it was released globally, supporting all iPads except the first iPad.[59] On August 6, 2014, support for Windows 8 touchscreen devices was added to the game, although not for Windows RT devices.[60]

The first adventure, Curse of Naxxramas, was announced on April 11, 2014[61] and then was released on July 22. It includes 15 bosses and nine class challenges that awards 30 cards, which includes nine class cards and six legendaries, and an exclusive card back if all heroic bosses are defeated.[24]

By September 2014, there were more than 20 million registered Hearthstone accounts.[62][63]

The first expansion, Goblins vs. Gnomes, was announced at BlizzCon on November 7, 2014 and then it was released on December 8. The expansion includes 123 cards, which includes 72 class cards, which are included within the expansion specific card pack. Pricing for the packs are the same as the classic packs.[64]

On December 15, 2014, the game was released for Android tablets 6" or larger in Australia, Canada and New Zealand and on December 16, 2014 it was widely released for Android tablets.[65] By January 2015, there were more than 25 million registered Hearthstone accounts.[66]

The second adventure, Blackrock Mountain, was announced at Pax East on March 6, 2015 and the first wing was released on April 2; the other four wings were opened weekly thereafter. It includes 17 bosses and nine class challenges that awards 31 cards, which includes 18 class and five legendary cards, and an exclusive card back if all heroic bosses are defeated.[16]

On April 14, 2015, the game was released for iPhone and Android smartphones worldwide. The smartphone version of the game includes new UI elements that places the player's hand on the bottom right but only half visible, so players must tap on their hand to zoom in and play cards. Single cards can also be viewed full screen by tapping and holding on a specific card, which is useful to read all the card details while using a normal phone display.[67]

On May 6, 2015, Activision Blizzard announced that Hearthstone and Destiny have generated nearly one billion US dollars in revenue for the company.[68] As of June 2015, the active players consist of about eight million PC players and nine million mobile device players, with some overlap between each group.[69] As of May 2015, there were more than 30 million registered Hearthstone accounts.[70]

The second expansion, The Grand Tournament, was announced on July 22, 2015, and was released on August 24; the set includes 132 cards from the expansion specific card pack, which costs the same as previous card packs.[71][72]

The third adventure, League of Explorers, was announced at BlizzCon 2015 on November 6, 2015 and the first wing was released on November 12; the other three wings were opened weekly with a one week break after the second week. It awards 45 cards, which includes five legendaries and an exclusive card back if all heroic bosses are defeated.[73]

The third expansion, Whispers of the Old Gods, was announced on March 11, 2016, and was released on April 26; the set includes 134 cards from the expansion specific card pack, which costs the same as previous card packs.[74][75]

Promotions

To mark the release of Hearthstone: Heroes of Warcraft, Blizzard released the Hearthsteed mount for World of Warcraft players that is obtained by winning three games in Arena or Play mode.[76] Widely advertised on various World of Warcraft websites, this promotion encourages World of Warcraft players to try Hearthstone, and marked the first significant crossover implemented between Blizzard games.

Players who purchased the Diablo III: Reaper of Souls expansion pack received classic card packs, with the deluxe and collector's editions granting additional packs.[77] Players who purchased World of Warcraft: Warlords of Draenor Collector's or Digital Deluxe Edition received an Orc handiwork themed card back.[78] Heroes of the Storm players who reach level 12 receive a Heroes of the Storm themed card back and after winning 100 Play mode matches receive a Heroes of the Storm mount that looks like a flying card.[79] Players who purchase the StarCraft II: Legacy of the Void deluxe or collector's editions receive a Protoss themed card back.[80] Players who purchased either Overwatch Collector's or Origins Edition receive an Overwatch themed card back.[81] Starting on March 11, 2016, players who level a character to 20 in World of Warcraft, which can be completed with the free starter edition, earn the alternate Paladin hero Lady Liadrin.[82]

Hearthstone players who pre-ordered the Blackrock Mountain adventure's five wings received a card back and players who pre-ordered 50 card packs of the The Grand Tournament or Whispers of the Old Gods received a card back.[83]

Competitions

Despite the designers' focus on accessibility and fast-paced gameplay, Hearthstone has been the focus of a number of tournaments. Blizzard hosted an exhibition tournament in November 2013 called "The Innkeeper's Invitational" with three decks each of a different class, featuring several well-known gamers such as Dan "Artosis" Stemkoski, Octavian "Kripparrian" Morosan, Jeffrey "TrumpSC" Shih and World of Warcraft multiple Arena season winner Byron "Reckful" Bernstein.[84] Artosis won the best-of-five tournament. In December 2013, 2P Entertainment hosted a tournament with a prize pool US$4,841 featuring the best players of the Chinese region versus the best players of the American region.[85] Hearthstone was the focus of a number of other tournaments during its closed beta, including those hosted by Major League Gaming and ESL. In March 2014, The eSports Association TeSPA announced the Collegiate Hearthstone Open, a free-to-enter tournament open to all North American college students, featuring $5,000 in scholarships.[86] Major League Gaming,[87] ESL[88] and the ZOTAC Cup[89] all continue to regularly host minor Hearthstone leagues in the North American and European territories with small or no prize pools aimed at everyday players. Blizzard staff "were a little surprised, in a good way" with the game's success as an eSport during its closed beta.[41]

In April 2014, Blizzard announced the first Hearthstone World Championship would be held at BlizzCon on November 7–8.[90] The tournament featured players from each of the game's four regions, with each region holding its own regional qualifying tournament. The Americas and Europe regions' qualifiers featured 160 players each, and determined half of those players from actual in-game performance in Ranked play during the April–August seasons. The four most successful participants of each region's qualifiers went to the World Championship, for a total of 16 players. The Hearthstone World Championship 2014 featured a total prize pool of $250,000, and the American winner, James "Firebat" Kostesich, received $100,000.[91][92]

The second Hearthstone World Championship was held at BlizzCon 2015 on November 7 with players selected in a similar way in the previous year and it was played in the best-of-five conquest format; the Swedish winner, Sebastian "Ostkaka" Engwall, received $100,000.[93]

Reception

Critical response

Reception
Aggregate scores
AggregatorScore
GameRankings(PC) 87.57%[94]
(iOS) 92.50%[95]
Metacritic(PC) 88/100[96]
(iOS) 93/100[97]
Review scores
PublicationScore
Eurogamer10/10[98]
Game Informer9/10[99]
GameSpot8/10[100]
IGN9/10[101]
PC Gamer (US)80/100[102]

Hearthstone: Heroes of Warcraft has received generally favorable reviews upon release, holding a score of 87.57% on GameRankings,[94] and 88 on Metacritic[96] based on 42 reviews by major video game critics. The game was praised for its simplicity, gameplay pace, and attention to detail along with being free-to-play, while the lack of actual card trading between players and any form of tournament mode were pointed out as the major shortcomings. Eurogamer gave the game the perfect score of 10 and remarked that the game is "overflowing with character and imagination, feeds off and fuels a vibrant community of players and performers, and it only stands to improve as Blizzard introduces new features, an iPad version and expansions."[103] IGN and Game Informer both gave the game a slightly lower grade of 9/10,[104][105] with IGN's Justin Davis praising the game for its "elegant simplicity of rules" and "impressive attention to detail and personality, and the true viability of playing completely for free make it easy to fall under its spell and get blissfully lost in the depths of its strategic possibilities."[101] GameSpot gave the game a score of 8/10, praising the game for its depth and complexity. The only major drawback noted was that the "absence of extra features hampers long-term appeal".[100]

Later Hearthstone: Heroes of Warcraft card expansions have also been well received. Game Informer rated the Curse of Naxxramas expansion 9/10, stating "Naxxramas is an excellent addition to the core game, and an exploration of sorts to examine the potential for additional single-player Hearthstone content [...] the adventure provides a substantial amount of new content that spills over into ranked, casual, and arena mode and changes how you approach the game."[106] PC Gamer found that "[Curse of Naxxramas is] a much-needed and fun refresher for Blizzard’s card battler", however "the next card expansion will need to be more sizeable", rating it 78/100.[107] Reception for Goblins vs. Gnomes has also been positive, with Game Informer writing "the first expansion set for Hearthstone is a major step forward for the already accessible and fun game", and awarding it a score of 9.25/10,[108] while Eurogamer scored it a 80/100, writing "whatever happens to Hearthstone in the future, the new content has stumbled a little by strengthening certain deck archetypes that needed no such help [...] it's re-introduced a thoughtfulness to play that's been absent for too long."[109]

Sales and legacy

As of April 2016, Blizzard has reported more than 50 million unique Hearthstone players; the company previously reported 30 million users in May 2015 and 40 million in November 2015.[110] According to Superdata market research, as of June 2015 Hearthstone takes in about $20 million in revenue per month.[111]

Hearthstone proved to be a popular game to stream and watch on services like Twitch.tv; Hearthstone-based streams overtook DOTA 2 streams to become the third-most popular game on Twitch in September 2015,[112] and remained one of the top five watched games by April 2016.[113]

Awards

At The Game Awards 2014, Hearthstone was awarded best mobile/handheld game.[114] In December 2014, GameSpot awarded the game with mobile game of the year.[115] GameTrailers awarded the game with multiplayer game of the year and best overall game of 2014.[116] At the DICE Awards 2014, the game was awarded with mobile game of the year and strategy/simulation game of the year.[117] The game won the 2014 BAFTA Video Games Award for best multiplayer game.[118] It was nominated for the eSports Game of the Year Award at The Game Awards 2015.[119]

References

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