To enter a code, simply go to the title screen, and select "level code".
| Code | Effect
|
|---|
| L1. 426 - 819 | Human Level No. 1
|
| L1. 451 - 577 | Alien Level No. 1
|
| L10. 083 - 137 | Human Level No. 10
|
| L10. 157 - 037 | Alien Level No. 10
|
| L11. 412 - 320 | Human Level No. 11
|
| L11. 486 - 386 | Alien Level No. 11
|
| L12. 215 - 166 | Human Level No. 12
|
| L12. 486 - 574 | Alien Level No. 12
|
| L2. 089 - 825 | Human Level No. 2
|
| L2. 344 - 883 | Alien Level No. 2
|
| L3. 147 - 589 | Human Level No. 3
|
| L3. 287 - 435 | Alien Level No. 3
|
| L4. 090 - 297 | Alien Level No. 4
|
| L4. 279 - 383 | Human Level No. 4
|
| L5. 090 - 493 | Alien Level No. 5
|
| L5. 353 - 583 | Human Level No. 5
|
| L6. 024 - 813 | Human Level No. 6
|
| L6. 485 - 382 | Alien Level No. 6
|
| L7. 156 - 629 | Alien Level No. 7
|
| L7. 411 - 536 | Human Level No. 7
|
| L8. 049 - 868 | Human Level No. 8
|
| L8. 091 - 017 | Alien Level No. 8
|
| L9. 288 - 611 | Alien Level No. 9
|
| L9. 379 - 023 | Human Level No. 9
|
