All Working Namco Museum 64 Cheats - Nintendo 64

99 continues
Before playing one of the games, repeatedly press [C-Right]. You can get up to 99 continues.

Double fighter ("Galaga"")
"Shoot one of the green ships on the top row to turn it blue. When one of them dives alone, avoid its shots. Intentionally allow your fighter to be captured by its tractor beam. With your next ship, wait until the joined ships to dive. Shoot the alien while carefully avoiding your captured fighter. You will have a double fighter with twice the firepower.

Super shot ("Galaga"")
"When the enemies fly onto the screen at the start of a level, press [A] wait very briefly, then press [R]. If done correctly, you will fire two shots with the single fighter. This can also be done with the double fighter. Do this while moving to spread out your shots.