Marvel vs. Capcom 3: Fate of Two Worlds brings together the finest characters from the worlds of Marvel and Capcom in a fighting game that pits heroes against villains. The game's storyline revolves around an alliance between Marvel villains, led by Doctor Doom and Dormammu, who join forces with Albert Wesker to unite their Earths into one. However, this plan catches the attention of Galactus, the Devourer of Worlds, who sees a catastrophe in the making and decides to destroy both worlds.
The gameplay is focused on the diverse roster of characters from Marvel and Capcom, including Captain America, Dante, Deadpool, Phoenix, and many more. The game features an online and offline mode, with players able to challenge each other locally or complete missions to learn their characters' move sets. In the online mode, players can challenge random strangers and complete special events. Arcade mode features a unique storyline for every character, with a three-person team fighting through six battles to reach the final battle with Galactus.