Cheat mode:
-----------
Enter one of the following passwords to activate the
corresponding cheat function.
| Effect | Password |
| Level select | ZZZCYX |
| Invincibility | BABYXX |
| Rapid fire | YAYAYA |
| View credits | ZAZACC |
| Hyper mode | ZABCXY |
| Level | Phase ;Password |
| 2 | 2 ;CBYXYC |
| 3 | 1 ;XABXAB |
| 3 | 2 ;AZCBXC |
| 4 | 1 ;YYBBCY |
| 4 | 2 ;BAXCXX |
