I have sonic colors, I guess you can unlock levels to open up multi-player games but that is not what I am looking for. I have 2 kids and I like how they can both play at the same time like new super mario bros. Since I love sonic I was wondering if there are any sonic games where both players play at the same time and if not are there any multi-player sonic games where you can chose 1 or 2 players from the beginning (unlike sonic colors)