Invincible
At the Data East logo, hold down Down + C + Start on Control Pad 2, no confirmation is given. Now go to options, and choose sound test 21. While holding Up + A + C on Control Pad 2, press Start on Control Pad 1 to return to the title screen. During play, while holding Up + A + C on Control Pad 2, press Start on Control Pad 1 to pause the game. To turn it off, pause the game again normally.
Level skip
At the Data East logo, hold down Down + C + Start on Control Pad 2, no confirmation is given. Press Start on Control Pad 2 to skip the current level.
