Animation vs. Arcade Games

In order to confront Q*bert who's messing with the arcade games, the main characters have to face Q*bert's mind-controlled game protagonists: Pac-Man, Frogger, Mario, Jumpman, and Pauline; as well as to fight off enemies and overcome obstacles such as the aliens from Space Invaders and the tetrominos from Tetris.

Example of:
Massive Multiplayer Crossover