Super passwords:
Enter TY19U as a password to start on the last level with maximum offense, defense, weapons, energy, and time. Enter TY690 to start the last level will almost full power.

Weapon power-up:
Hold B until a beep is heard. Release B to release a more powerful shot.

Level	Password
2	73Q17
3	E3QG3
4	L3QG3
5	S3QG3
6	Z3QG3
7	I3QG3
8	P3QG3
9	W3QG3
10	33QG3
11	A3QG3
12	H3QG3
13	U3QG3
14	53QG3
15	K3QG3
16	F3QG3
17	13QG3
18	63QG3
19	83QG3
20	D3QG3
21	M3QG3
22	R3QG3
23	TY2NU