Mario & Sonic at the Olympic Games
From Sonic Retro
mario and sonic at the oylmpic games is being depeloped by sega and is set for a holiday 2007 release date, it is being watched over by miyomotos team for help. This is the first time mario and sonic have got together and been in the same game.
However some people expected a mario, sonic crossover.
you will be able to play as multiple characters, incliding, yoshi, tails, and knuckles