A crossover game that is planned to have Street Fighter characters in the 3D fighting style of a normal Tekken game.
The reverse of Street Fighter x Tekken which put Tekken characters into the 2D fighting style of a Street Fighter game in 2012.

The game has been stuck in development since its 2010 announcement and the game was put on hold officially in 2016, though early character models and some gameplay systems were said to be finished at the time.