This coincides with the expectation that an average Hearthstone duel will run around 7-15 minutes.
Called Hearthstone: Heroes of Warcraft, the duelling game is based around cards players gather.
Hearthstone could face competition from game studio Mojang which is developing a similar game called Scrolls.
Currently, there is no direct connection between World of Warcraft and the Hearthstone game.
Hearthstone includes a Play Mode that offers head-to-head battles for friends on Battle.net to engage in battles.
FORBES: Blizzard Entertainment Embraces Free To Play Gaming With Hearthstone: Heroes Of Warcraft
Blizzard said Hearthstone was going through internal testing but would be released before the end of 2013.
The new Hearthstone game allows players to build card decks centered on one of nine iconic Warcraft character classes.
FORBES: Blizzard Entertainment Embraces Free To Play Gaming With Hearthstone: Heroes Of Warcraft
After he landed in Cornwall he "discovered" tin when his black hearthstone became so hot, tin began to melt out.
Despite this, she said, Hearthstone looked well put together.
At PAX East 2013 in Boston, Blizzard Entertainment (a division of Activision Blizzard Publishing) is offering gamers the first chance to get hands-on gameplay with the new cross-platform free-to-play (F2P) game Hearthstone: Heroes of Warcraft.
FORBES: Blizzard Entertainment Embraces Free To Play Gaming With Hearthstone: Heroes Of Warcraft
Cards in the game are based around characters, spells and artefacts from Blizzard's Warcraft world to make them immediately familiar to players, said Rob Pardo, Blizzard chief executive during a presentation about Hearthstone at the Pax East gaming convention.
The mystic chords of memory, stretching from every battle-field, and patriot grave, to every living heart and hearthstone, all over this broad land, will yet swell the chorus of the Union, when again touched, as surely they will be, by the better angels of our nature.
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