Multiverse Dimensional Racing

Multiverse Dimensional Racing is a crossover racing video game with different characters from around the multiverse.

Plot
Various characters from around the multiverse received a letter invitation to compete in the Multiverse Grand Prix for the top prize, the Multiverse Big Boss Award. The host of the competition, also the individual who sent the invitations, is an unknown, unseen driver of a green UFO with a dome window simply dubbed as the Mystery Racer, who claims to be the champion of the Grand Prix. Which the participating racers are challenged to beat, as well as each other.