| Master Code (Must Be On) | EABT-AA4W |
| Special Attack Uses No Energy | AB8A-AACW |
| Special Attack Uses ½ Normal Energy | AB8A-ANCW |
| Normal Attack Uses No Energy | R1DT-A60R |
| Normal Attack Sees Player Gain Energy, Rather Than Lose | P1DT-BD0R |
| Start With Maximum Energy | AA4A-BB96 |
| Infinite Credits | AJ7A-AA3R |
| Each Energy Unit Worth Twice As Much | AB9T-CTE0 |
| Each Energy Unit Worth Four Times As Much | AB9T-DAE0 |
| Each Energy Unit Worth Eight Times As Much | AB9T-CAN0 |
| Most Alien Hits Do No Damage | ALXT-AA4Y |
| Aliens in Shooting Gallery Do No Damage | AJEA-CA7R |
| Start on Mission 2 - Expel the Aliens | 9WET-BCS4
CWET-B998
ACET-AGH6 |
| Start on Mission 3 - Alien's Nest | 9WET-BCS4
CWET-B998
ACET-ANH6 |
| Start on Mission 5 - Save the Laboratory | 9WET-BCS4
CWET-B998
ACET-A2H6 |
| Start on Mission 6 - Night Crawler | 9WET-BCS4
CWET-B998
ACET-A8H |
| Start on Mission 7 - Destroy the UFO | 9WET-BCS4
CWET-B998
ACET-BEH |
| Start on Mission 8 - Final Battle | 9WET-BCS4
CWET-B998
ACET-BLH6 |
