This is also possible in the first and second Monkey Island games, using hotkeys ctrl+W or maybe alt+W.
The cheat code will immediately end your game while informing you that you scored 800 of 800 points (presumably a Sierra reference; this is the only way to score any number - including zero - of points).
There's no particular reason you'd discover this while playing either game, but if you play the third one, a mandatory plot point will show the message "You lose. You scored 0 of 800 points," referring back to the obscure joke in the earlier games.
The cheat code will immediately end your game while informing you that you scored 800 of 800 points (presumably a Sierra reference; this is the only way to score any number - including zero - of points).
There's no particular reason you'd discover this while playing either game, but if you play the third one, a mandatory plot point will show the message "You lose. You scored 0 of 800 points," referring back to the obscure joke in the earlier games.