ProjectorGames, creators of one of the best-selling Xbox Live Indie MineCraft clone FortressCraft, are going in a different direction with FortressCraft2D: sideways.
A far cry from the 3D building game that sold like gangbusters in the XBLIG channel, FortressCraft2d is a 2D zombie survival game that leans heavily on procedural generation of worlds and weapons to keep the experience fresh and new every time it's played. There's a definite Terraria vibe here, with a little Borderlands thrown in for good measure.
This is a community-driven game, so much so that they've gone and shared the design doc, which covers everything from inception to merchandising potential. And don't mention ripping off other games — he's got slapping people that do on his todo list.
FortressCraft2D : Zombie Survival [IndieCity Underground]