Bart vs. The Simpsons Bart vs The Space Mutants is a platform game where the player takes on the role of Bart Simpson and must stop the Space Mutants from invading Springfield. On each of the five levels, Bart must collect ingredients that the Space Mutants are planning to use to build their machine, such as purple objects or balloons. He also has to collect proof of the aliens' existence, brown coins left behind when they are jumped on, so his family members will help him when he meets a boss.
The ways Bart can get rid of those objects sought by the Space Mutants are numerous. For instance, in the first stage, Bart must get rid of purple objects. He can dye them red, cover them, wash them, etc. Some even involve a little puzzle solving, like playing a trick on Moe to make him get out of the bar. Bart also has some coins that can be used in many ways throughout the game, like buying things, getting devices operating, etc.