Street Fighter X Tekken lets players customize their characters with different gems before a fight begins. Some gems boost stats like the Iron Wall gem ups defense and the Swiftness gem speeds your fighter up. The Tremendous Power gem amps attack and the Fierce Attack gem increases the rate your special attack gauge charges.
Blue assist gems give characters abilities. The auto throw escape gem gets your character out of throws and auto guard, a Tekken technique, makes you block as long as you are not pressing any buttons.
Each gem has activation conditions. Both of these abilities deplete the special attack gauge and won’t activate if you’re out of energy. In other words, you can’t auto turtle forever. Other gems turn on when you’re attacking, getting hit, using a special attack or launching the other player into the air. Street Fighter X Tekken comes out on March 6 for PlayStation 3 and Xbox 360 in North America.