Play Monster Rash this game online for free! Lots of fun to play when bored with crazy games at school. Different monsters one have to survive retro planet world monsters suddenly turned into cubes and they need to reach end of level by jumping obstacles their cube state Jump over obstacles and collect stars You have to collect stars because you have to have 20 different monster costumes In some sections you can get rocket and fly rocket If you get rocket whatever costume youre wearing will return to its original state