There are two: Mario and Sonic at the Olympic Games, and Mario and Sonic at the Olympic Winter Games. Both are on the Wii and DS.
in the death battle of mario vs sonic sonic won by a spin dash to the back.
My mom.
yes THEY DO !!! IN brawl They also meet in super Mario bros. z. IT IS NOT A JOKE! WATCH IT! and there is a sevral movies called sonic vs Mario
no one since you control it.
Hit the A button after you throw the hammer
It is optional
the only way to be sonic is smash bros brawl sonic the secret rings and maeio vs sonic unlimpics
kingdom hearts
I haven't played Mario vs Sonic, but super mario 3d is easy, fun, and good, though it highly lacks in story as do most mario games.
Gaming websites like GameSpot and MMO-Champion list polls about video games, including polls about Sonic vs Mario. These polls can also be found in online gaming forums.
If by good you mean worth playing for, then yes. In the Mario and Sonic London 2012 Olympic Games, Beijing Olympic Games, and Winter Olympics for Wii, there is a wide variety of characters from both Super Mario and Sonic the Hedgehog, good and bad guys. You can select one character to play with against other players in Olympic events. Its definitely an awesome game.
Mario has superior strength in comparison to Sonic however Sonic is faster than Mario.