To make sure that the save file is recognized. Pick the one for your favorite game and start playing - and feel free to update the challenge in this thread, at your leisure! Here you can find all the different savefiles that you can use for this event.
But, please, don't use those candies in place of your regular grinding! Only those you find during your adventure should be used for that reason. ПŽ€ You can use the various Rare Candies included in each Save file to raise the level of the Pokémon that hatches right up to the level of the Pokémon you caught and that is being replaced. If you don't have access to a PC yet, you can keep using your starter Pokémon for as long as you need. ПŽ€ You have to swap every Pokémon you catch with one of the eggs that are in your PC, and use the Pokémon that hatches from there instead. ПŽ€ As for the catches, it's still like in a nuzlocke: as soon as you get your Pokéballs, you may only catch the first Pokémon you find in each area. It creates a stronger bond between you and them!
ПŽ€ You also must nickname all the Pokémon that you will use in your team, if they don't already have a name. You can box them or release them, your choice. ПŽ€ This is still a nuzlocke, so every Pokémon that gets knocked out is considered dead, and cannot be used in battle ever again.