'Go visit an art museum in your area and quit video games'
Developer Arcane Kids wanted to do something, uh, nice (?) for Bubsy's 18th birthday. So, it brought Bubs back in this low polygon, free, 3D browser game, Bubsy 3D: Bubsy Visits the James Turrell Retrospective.
It starts off innocuous enough as frogs tell you how to jump and you collect balls of yarn or possibly acid. Then you go to an art museum that wants you to quit video games before you're rocketed off to Hell. Enjoy!
Oh, and here's a compilation of cheats.