Cheats for 1943 (NES)

Weapon power-up

Hold B until a beep is heard. Release B to release a more powerful shot.

Passwords

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

Level password

T Y 1 9 U - level 23