Can you make it through all 50 levels?  Slide your purple sticky block through increasingly fiendish puzzles in this brain-bending game.  Other blocks stick to yours whether you want them to or not, so you'll have to plan your moves carefully or end up in the middle of a large, unmovable clump of blocks!  Deliver blocks to identically-colored locks to clear up space and pass through to the next level.  50 levels + 8 bonus levels + secret levels!