Street Fighter X Tekken is the first Street Fighter and Tekken crossover game. It features a large number of characters from both the Street Fighter and Tekken universes, each with their own Super Art and Cross Art.
The game is a two on two style tag game. When one character is KO'd, the round ends. There are a number of different gameplay mechanisms found in the game.
There are Super Arts (Super Combos), Cross Arts (both of your characters will perform their Super Arts on an opponent), Super Charge (you can charge a character's moves by holding the button down), Cross Assault (both characters are on screen and can attack the opponent), Cross Rush (a combo attack used by any character with the same button combination), and others.
The main new features of the game are the Gem and Pandora systems. Players will customize their two character teams with gems that alter speed, damage, and defense. Pandora is activated when a character reaches the final 25% of their life bar and provides a boost to attack capabilities.
The game also features a six button Street Fighter layout and a four button Tekken layout. Both button layouts will allow players to pull off many of the same combos and moves.