WWE Wrestlemania XXI - Xbox Unique character-building story mode allows you to upgrade your Superstar's appearance, abilities, entrance, costumes and move-set as you attempt to win the WWE Heavyweight Championship Four-player head-to-head online play with multiple match types and voice chat support New online create-a-belt feature Superstar moves and animations come to life like never before with motion captured technology Pro reversal system - First wrestling game to ever feature a countering system that incorporates a contrary reversal for each and every attacking move