Alt Enter should do it for you
So the button works but weirdly enough it doesnt help, back then I was able to get full screen in the past with no issue but now its stuck in this boxed ratio, could it be a update messed up the Ratio?
Steam deck Screen is 800x1280 (in that order important) and a ratio of 10:16
I wish I can upload some images to give you a look but I guess Itch doesn’t support images in comments lol
How are you running it in steam deck, as a windows emulation or via a Linux shell?
If via windows, you may be able to reset it back to default settings if you wipe your player data (this may also wipe your progress). You can find it here:
AppData Folder:
- Open File Explorer.
- Enter
%AppData%in the address bar to navigate toC:\Users\[YourUsername]\AppData\Roaming. - Navigate to
..\LocalLowfor Unity game data.