All passwords
On the title screen press Select, then input one of the following passwords.
Note: Password for asteroid 8 allows you to select any of the 8 stages, whereas password for asteroid 6 allows to select any of the first 6 stages, etc.
| Password | Effect |
| 8SPZ0EZU5YO6L88OQQ | Asteroid 2 |
| 39DJPTL8LESUP33ELH | Asteroid 3 |
| 0SZFEKK74FGR7G0PXV | Asteroid 4 |
| MA1DGIH8Q07OAV6MYQ | Asteroid 5 |
| F2V0K2FVK2FR2M40UT | Asteroid 6 |
| QO860Z686OZ5BPCDPO | Asteroid 7 |
| FDBPP40H480LRB5FVV | Asteroid 8 |