The following are known Action Replay Codes for Rhino Rumble 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

Inf Lives
9109b6d0

Max Score
919fafd0
9186b0d0
9101b1d0

Invincible
9136c9cb

Rapid Fire
91002bc1

AR Switch To Float
91f0c0cb