First person shooter with zombies and in-game editing based on the Cube2 engine. Stalker-style environment, and lots of zombies of several different kinds.
Actually, this is quite good compared to other CUBE 2 projects. I've used CUBE 2 before, so I know its not easy. The mapmode is pretty simple(Maybe because I've used CUBE 2). The campaign is pretty blank to me( Nazi zombies?).
But if can get past the whole nazis-are-zombies-here-insert-explaniation-here campaign, then you'll enjoy the small bit of ZCUBE that has been released.