Joe

Joe is a puzzle platformer starring Joe, a jolly green blob stranded in a series of deviously-designed mazes. The only way out of this mess is by collecting enough keys to get through the doors barring the way to the exit. This would be simple, but Joe's movements and jumps are strictly confined to a grid: any misplaced step or hop can undo your progress, or (often enough) drop you to your death - the level design incorporates jumping puzzles requiring memorization and precision. Elements are introduced gradually as you go: deadly mines and water; switches, which move bricks around and operate lifts; slippery ice; teleporters; poison mushrooms that curb your jumping skills, until you can find a cure; and mine carts that can be pushed around.