If you're a fan of the Witcher series, you've probably heard of Gwent. The collectible card game is an optional part of The Witcher 3: Wild Hunt, tasking players with collecting cards and ultimately dominating their opponent on the tabletop "battlefield." Now, as expected, the game-within-a-game is being turned into a game of its own (try saying that three times fast.) It'll launch as a closed beta on Xbox One and PC this September, before coming to PlayStation 4 later on. Similar to Blizzard's Hearthstone, it'll be a free-to-play title with optional in-game purchases. Taking a page from The Elder Scrolls: Legends, however, developer CD Projekt Red is also working on a "fully featured single player adventure" for the game.