Paradroid

Unlimited lives:
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 8314,123
SYS 4096

Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 7475,197
SYS 4096

No opponents:
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 7276,197
SYS 4096

Cheat mode:
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 5182,234
POKE 5183,234
SYS 4096

Cheat mode (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program.
POKE 5182,234
POKE 5183,234
POKE 8659,76
POKE 8660,252
POKE 8661,33
SYS 4096