Marvel vs. Capcom: Infinite

Marvel vs. Capcom: Infinite is a fighting video game developed and published by Capcom. It is the sixth main entry in the Marvel vs. Capcom series of crossover games. Like previous installments, players control characters from both the Marvel Comics and Capcom universes to compete in tag team battles. Infinite features two-on-two fights, as opposed to the three-on-three format used in its preceding titles. The series' character assist moves have been removed; instead, the game incorporates a tag-based combo system, which allows players to instantly switch between their two characters to form continuous combos. It also introduces a new gameplay mechanic in the form of the Infinity Stones, which temporarily bestow players with unique abilities and stat boosts depending on the type of stone selected.

Ultron Sigma has two of the Infinity Stones, Space and Reality. To wipe out biological life, he begins unleashing an evolved form of the Sigma Virus that turns organic creatures into synthetic beings under their control. An alliance of heroes from both worlds is then formed. They manage to keep Ultron Sigma at a stalemate until they rescue Thanos from Ultron Sigma's prison and secure him in a containment field at Avengers Tower. To gain their trust, Thanos reveals the locations of the remaining four Infinity Stones, and teams of heroes are dispatched to find them.