Infinity Wars completed Kickstarter funding in December 2012; the game is currently available only through a closed beta. Codes with instant beta access and a 15-card booster pack will be handed out to channels who want to stream the game from Oct. 11 - 13.
Those interested in streaming that weekend must contact the game's community creator. For more details, check out the announcement.
Infinity Wars is being developed for Windows PC, Mac, Linux, Android and iOS devices. The game is also currently collecting votes via Steam Greenlight.