With one of the Konami Game Master cartridges in slot1 and the game in slot2 you can use the Game Master to start at a higher level and/or with more lives.
Alternatively with the game in slot1 and one of the following games in slot2:
- Maze of Galious: When you loose a ship, you get your weapons back (does not work with a CONTINUE after game over)
- Penguin Adventure: Your ship is a Penguin, power-ups will turn into fishes and blue power-ups will turn into birds
- Q-Bert: the following passwords can be used while the game is paused (F1):
LARS18TH - All weapons
METALION - Green shield (You are immortal for a while, but you can't fly through the landscape)
NEMESIS - Go to the next stage