The first "Adventure style" sonic game, released originally on the
Sega Dreamcast. It was
ported to the GameCube, X
B O X Circle Edition, PC (multiple times), and more I probably don't care about enough to research about it. It's glitchy, fun (when it wants to be), has a modding community, and can run on my computer (20-30fps in Minecraft let's go!!!!!). I got it for less than 4 dollars on steam once during a sale...