Street Fighter X Tekken is a crossover fighting game developed and published by Capcom and released in March 2012 for the PlayStation 3 and Xbox 360, in May for Windows and in October for the PlayStation Vita. The game features characters from both the Street Fighter franchise and Namco's Tekken series. In the game, each player selects two characters respectively and face other as duos in tag team fighting matches, with the objective to knock out one of the members from the opposing team. In addition to the game's multiplayer modes, the game also features a single-player Story mode with a plot revolving around a mysterious object called the "Pandora".

Tekken X Street Fighter was a planned crossover fighting game that was being developed by Bandai Namco Entertainment. It was supposed to cross the universes of Namco's Tekken and Capcom's Street Fighter into one game, creating a roster from both franchises. The game was announced at the 2010 San Diego Comic-Con International by Bandai Namco producer Katsuhiro Harada. The gameplay of Tekken X Street Fighter was going to feature the same 3D fighting game engine of the Tekken franchise, as opposed to Street Fighter X Tekken, which features the 2D-style gameplay of Street Fighter IV. Bandai Namco put the game's development on hold in 2016.