From what I've read, you should be able to install the itch.io app on the steam deck and install the game from there. You'll have trouble running windows versions of things since the steam deck uses a modified version of linux
i installed the itchio launcher, i extracted the game files on my downloads directory, i add the downloads directory to the download locations list on the itchio game launcher. but no games can be discovered when scanning install location for games. Im very lost
I am noticing that trying to reinstall directly from itchio game launcher client is not possible. An error saying something along the lines of " it comes from an incompatible website"