Kingdom Hearts Basic Nuzlocke Rules:

1. Must be played on the hardest possible mode
2. Any time the main playable character dies and is unable to proceed due to story reasons or other game mechanics (saved by Mickey, Sabor 1, Leon 1, Coliseum Tourneys, etc), the run is automatically over.
3. The run begins under one of the following criteria:
a. The prompt appears "From this point forward, if your HP hits zero, it's game over."
b. If no such prompt appears in the game, then the run begins after the tutorial OR
c. Leaving the first world (the Land of Departure, etc)
4. Anything that can be nicknamed must be nicknamed (gummi ships, dream eaters, etc)
5. The run is completed upon finishing the main story. DLC, Olympus Tournaments, the BBS Secret Episode, etc are optional.