Cheats, Secrets, Tips & TricksMendel Palace - Cheats, Secrets, Tips & TricksBonus Levels Hold Select + Start and turn on the NES console. Share on FacebookShare on TwitterShare on LinkedinShare on Reddit Do you know any additional cheats for this game? Is there an error listed above? Let us know about it and we’ll update the list. Other Content for Mendel PalaceMendel Palace Game IndexGame Genie Codes