The following are known Action Replay Codes for Project S-11 on Nintendo Game Boy / Color (GB / GBC). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

Infinite Armor
9190dbc1

Infinite Bombs
9106d8c1

Infinite Lives
9106dac1

Max Score
9199d6c1
9199d7c1

Weapon Modifier
91xxd9c1

Single Shot
00

Dual Shot
01

Triple Shot
02

Thick Triple Shot
03

Super Shot
04

Plasma
05

Dual Plasma
06

Triple Plasma
07

Quad Plasma
08

Super Plasma
09