Here are some cheats and tips for the game Mystery Quest.
GXNPYAVG Invincibility
AEXOGEEY Immune to monster attacks
AEUOAENY Immune to shallow water
ATSEUYAG Start with more energy
AZSEUYAG Start with less energy
PEUOKPAA Start with raft and key
GXVOOYSA Never lose key
PENOPTAA Never lose raft