LÖVE

I'm trying to leave open files like "textures", "saved" or "languages" for
anyone to modify, but I don't know.

If you talking about easy way to allow open fused game in your exe file, then you have nothing to do
Anyone can open fused game with any archive program, for example, with 7zip and then edit it

Another possible way to allow modifications is to make the game look for those files in the save folder, and load the files therein instead of the ones bundled within the fused exe. Just make sure appendidentity is set to false in your conf.lua.

MrFariator wrote: ↑Sun Nov 21, 2021 9:44 pm Another possible way to allow modifications is to make the game look for those files in the save folder, and load the files therein instead of the ones bundled within the fused exe.

I'd have it copy everything from the fused exe into the save directory on launch (but not overwrite existing files).

Just put your files in the same directory as the fused exe, call and you're good.