Sonic Rivals is intense gaming action where a friendly competition turns serious. What starts as a friendly competition between Sonic and Knuckles quickly intensifies as Shadow and other rivals jump into the action. Sonic Rivals allows gamers to utilize boost moves and power-ups to trip, shove, and vault over each other while hurtling towards the finish line at breakneck speeds. Players will negotiate wildly twisting 3D tracks while avoiding the insidious Dr. Eggman and his myriad of hazardous traps and contraptions. Gamers can play as one of four different characters from the Sonic Universe, each with separate fast and winding storylines. 4 characters, 4 different storylines - Select Sonic or one of his rivals and play through each of their story through fast and winding stages Extensive reward system based on card-collecting - Enhance your character's various skills through character customization WiFi connectivity - Wager trading cards for various multiplayer challenges