The following are known Action Replay Codes for Frogger 2: Swampy’s Revenge 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 Lives
9109dfc2

Have All Gems Collected
9100b4c2

Max Score
9199e3c2
9199e4c2
9199e5c2