Choose "Secret Code" from the main menu, then enter the following codes.

Password	Effect
Berry,Berry,Bery,Berry	Frogger City view image
Lily,Dr.Wani,Lily,Dr.Wani	Start at Doom's Temple level 1 with Berry
Frogger,Lily,Lily,Lily	Start at Doom's Temple level 2 with Berry
Frogger,Frogger,Frogger,Berry	Start at Doom's Temple level 3 with Berry
Berry,Lily,Lumpy,Lily	Start at Dr.Wani's Manson level 1 with Berry
Liliy,Lily,Dr.Wani,Dr.Wani	Start at Elder Ruins Level 1 with Berry
Frogger,Berry,Finnius,Frogger	Start at Elder Ruins Level 2 with Berry
Lily,Lily,Dr.Wani,Lumpy	Start at Sealed Heart Level 1 with Berry
Lily,Frogger,Frogger,Lumpy	Start at Sealed Heart Level 2 with Berry
Finnius,Finnius,Finnius,Finnius	Unlock Frogger on the moon image
Finnius,Dr.Wani,Lumpy,Frogger	Unlock Lobster Hat
Lumpy,Lumpy,Lumoy,Lumpy	Unlock Master Ship Hat
Frogger,Lumpy,Lily,Frogger	Unlock Skull Hat