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Hello! Welcome to the Splatoon 3 'Thunder' part of the wiki. Here we explain how to mod Splatoon 3 to it's full potential and how you can get started with modding! Here are the things you will need in order to get started with modding:

A Splatoon 3 romfs dump

A modded switch running Atmosphere CFW or an emulator like Ryujinx.

(Optional) [Flexlion Mod Menu. This can be useful to preview skyboxes before you apply them in the level/stage file, etc Editing the skybox within the stage/level

So you want to add a skybox from another level/stage. Here's how you can do it.