Game Grumps - The Grump Variations. The whole nature and structure of this is so reminiscent of classic Looney Tunes. It's so well done. The song is the song from the first stage of 3D World Runner, by the way. Posted by CaptainObvious at 9:29 AM No comments: Labels: 3D World Runner, Animation, Game Grumps, Youtube. Norm Macdonald - The Real Heroes. The audio here is a bit primitive. Use.