I'm not sure I wholly understand what I'm doing, here. I can roll around, shoot white blocks (which moves them), and shoot the enemy (which moves them but doesn't kill them, to my surprise), but... then what? I like the conceit of the rolling cube which fires in a particular direction, much like a bunch of single-player puzzles of this kind. The time limit on a move makes it all feel rather rushed, which is a little unfortunate because it makes the game feel like a very low rez arena deathmatch, rather than like a carefully thought-out chess game.