Here are some cheats and tips for the game Asteroids.
Infinite Lives P1 8011013C 0009
Infinite Lives P2 80110140 0063
Enable Classic Asteroids 80110428 0001
Stage Select+Invincibility * 801104B4 0001
Classic Asteroids Codes
P1 Infinite Lives 80111848 0003
P2 Infinite Lives 8011184C 0003
Invincibility P1 80110968 0000
8011096A 0000