Cheat Codes !free! - Sega Genesis

On the main menu, highlight "Options." Hold A + B on controller two and press Start on controller one. Inside the options, you could then select "Mania" difficulty.

This wasn't just harder; it was borderline unfair, designed for arcade veterans who wanted a true challenge. It also gave players access to a secret "Battle Mode" where you could fight friends using any character in the game, including the bosses—a feature that felt revolutionary at the time. sega genesis cheat codes