Black Hole Assault!! Kidding, you can just play the Turbo version, I don't recall much different, even then, it's nothing special IIRC. The Sega CD is handy for Piel Solar if you have a version with the cd. If you like the Chuck Rock's, then both are probably the best versions to get, atleast for the music, Earnest Evans(if that's you're bad, I like the cd version best from what little I've played of it), Earthworm Jim(best console version possibly aside from the one on PSN).