It isn't ren'py that's the issue. It it downloading the files from a 3rd party that is the issue. That's what the itch app says when i try to install it, and that the 3rd party site is incompatible.
That just means you can't install it through the Itch app. It's not a steam deck issue. Just means you need to go to the game's itch website manually and download it from there instead of through the app.
