Marvel vs. Capcom 3: Fate of Two Worlds is a crossover fighting video game developed by Capcom in collaboration with Eighting. The game features characters from both Capcom's video game franchises and comic book series published by Marvel Comics. It was released for the PlayStation 3 and Xbox 360 consoles in February 2011. It is the sequel to 2000's Marvel vs. Capcom 2: New Age of Heroes, the fifth installment of the Marvel vs. Capcom franchise, and the first to use three-dimensional character models instead of two-dimensional sprites.

A fighting game is a genre of video game that involves combat between two or more characters. Fighting game combat often features mechanics such as blocking, grappling, counter-attacking, and chaining attacks together into "combos". Characters generally engage in battle using hand-to-hand combat—often some form of martial arts. The fighting game genre is related to, but distinct from, the beat 'em up genre, which pits large numbers of computer-controlled enemies against one or more player characters.