But my situation is different. I am playing it on itch.io official app. I did not download it from their website but I downloaded it from their official app. Can I do the same thing here?
Sure
How? I am searching for the files but I can't find it. Since I downloaded it from their app, I can't do this root stuffs.
Open the file directory where the games are installed from Itch.io , find the folder with our game and do the steps I described above
