Ending:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 3310,255
Faster speed:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 18316,0
Constant speed:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 18605,165
Opponents stopped:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 20005,181