Bubble and Squeak (Genesis)

Invincibility Password
The game has one hardcoded non-level password: SNSFTXYZ grants invincibility. There is no indication that you successfully entered the password (or if there is, I can't hear it; will try again later); you will merely not die if you entered it correctly. Invincibility also applies to suicide (pressing A + B + C while paused).

You will still be animated with the standard hurt animation when hit (even if the hit should result in death) or committing suicide.