What code do I have to input at the end of You Have to Win the Game?
The secret symbol means that each letter should be moved back by 3, so the cypher is effectively ROT(-3). This means that the final secret word is
SUPER
I have tried the secret code
and it worked. Just a note: When you win the game, the game puts you back at the first screen, but you still have all of your powers and progress. But when you choose to lose the game, however, the game puts you back at the first screen and you lose all of your powers.