Roguelikes. You either love them or you loathe them. Or, well, you don't particularly care about them I suppose. Anyway, I am pretty confident the roguelike-lovers among us will be more than happy to discover Steam Marines and play its freely available alpha version. Interesting steampunk setting and the traditional procedural generation of levels and items aside, the game innovatively lets you control a squad of four all the while featuring a cover system, destructible terrain and cute 2D visuals. There's a ton of -addictive- fun to be had.

Oh, and if you like what you see, I do suppose you could give Steam Marines a small Steam Greenlight push. Steam Marines is available for both Windows and Mac platforms.