Cheat mode
Type yoyoyo to display the cheat code prompt. Type one of the following codes to activate the corresponding cheat funciton.

Effect Code

Open all bonus room doors: aofreoio
Auto fly mode in lab: oaoaeioa
Disables morphing (suicide): eatee
Fight all the characters: erhne
Auto fly in bonus rooms: erhtrr
Weaker Toadman: erhyhrly
Fights three rounds: itihfo
Double time in bonus rooms: ofovh
Enable tadpoles attack in lab: oivnnfof