Bart vs the Space Mutants

Bart vs the Space Mutants is a game released onto the NES starring Bart Simpson from adult-oriented animated series The Simpsons.

Plot
Space mutants are invading Springfield and it's up to Bart to save the day. Their superweapon initially requires "purple things", so Bart has to hide or re-paint everything that is purple. When he succeeds, the mutants change their plans to just "hats", so Bart has to collect every hat in Springfield.

Criticism
The Angry Video Game Nerd has cited the plot as being confusing, the controls as being broken, and various other problems.