Here are some cheats and tips for the game Back to the Future.
PEXEGAGA Start with 1 life
AEXEGAGE Start with 8 lives
SZKEGOVK Never lose a life in Hill Valley game
SXOELOVK Never lose a life in Cafe game
SXKALOVK Never lose a life in School game
SXVELOVK Never lose a life in Dancing Hall game
AVVOUZSZ Disable all timers