The infamous barrel from Carnival Night Zone Act 2 in
Sonic 3, which has haunted the dreams of many a child growing up in the '90s. You would
think that you had to hop on it in a rhythmic fashion to get enough momentum to drop down like the other barrels would behave, but nooooo! Instead, you have to press up and down, which is the only time in the game where the rules were changed, and there were no clues in the game as to how to do this. Not even the manual could help you!