The following are known Action Replay Codes for Azure Dreams 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

Koh Quick Level-Up
01fab1c0

Koh Level 99
0163aac0

Koh Infinite MP
01fad6c0

Koh Infinite HP
01ffd4c0

Koh Max. Attack
01ffb4c0

Max Cash
01ff18d0
01ff19d0