Wormy Smash! is a game that contains this song. This is his instructions: You are a worm that squishes the dudes, miss stepping on their head, and you're dead! ooo that rhymed
Arrow keys, WASD, or mobile to move. Music is from newgrounds.com.
One more thing: this is on Scatch.mit.edu. Type "Wormy Smash!" to find this game.