well kinda. there is sonic and Mario at the winter olyimpics for the DS ( and only for the DS) where there is a story mode selection
Sonic 3D Blast came before Sonic Adventure.
No, Mario isn't on sonic the hedgehog game.
complete the game then do all the special missions.You also get Bowser Jr
Sonic Adventure 2 By The SuperAmr!!!!!!!!!!!!!
Sonic Adventure
nope its either sonic or mario :(
Sonic adventure battle 2
You can click download game trial after clicking sonic adventure at the game marketplace.
Sonic adventure 1 and 2
Mario and sonic at the olympic games
Sonic Adventure Battle (DC/GC) and Sonic Adventure Battle 2 (DC/GC)
Sonic heros.