Space Bastards: Sudden Justice

Space Bastards: Sudden Justice is a push-block puzzle game.

With your one (or, optionally two) Robosaur(s) you must wade your way through over 100 levels of block puzzles, saving aliens from the evil menace of the Space Bastards (no, really...). Every ten levels or so, a new type of block becomes available, with new properties that change your strategies.