Zeppelin

Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 18546,44

Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 10081,100

Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 14337,100

Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 18546,234
POKE 18547,234
POKE 18548,234