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The only way that works for me is when I zip up the folders and put in inside, how do I make it like that?

Yes, source is everything someone needs to open the project from the game engine. You need to zip up your project folder and upload it. It can be a zip upload to your submission page instead of GitHub.

I have put the zip folder in github, but I am not sure how to put it in itch. I have tried to put it but it does not seem to appear 

It looks good now :)

thanks for helping me