How to play

Pick up ammunition for 9 shots. Keys open one door each; enter it on your next step. Push boxes, bombs, question boxes and an inactive ship into free space. Shoot sand to clear a path. A question box reveals a random object after it is shot.

Enemies, bullets, flames, lasers, rivers and magnets can kill Robbo. Mirrors teleport between linked destinations. Bombs trigger nearby bombs. A destroyed required screw or ship can make a planet impossible to finish: press R to retry. Retries are unlimited.

The planet selector lets you revisit any stage. Each campaign contains the same 56 planets with a few historical layout differences; inventories reset between planets.