Invincibility:

Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 13473,255 

Invincibility (alternate):

Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 13473,255

POKE 13481,0 

Invincibility (alternate):

Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 14073,255