Hey folks!
Ad Fundum is finally playable on Steam Deck!
It is currently in beta, so you may encounter some minor issues. However, based on the test results, it seems to be working fine.
To play Ad Fundum on your Steam Deck, you need to join the open beta. To do so, select "Ad Fundum" from your library, then go to "Properties" > "Betas" > "Beta participation", and choose "Open Beta - Open beta for Steam Input Testing".
Once I'm sure there are no issues with Steam Input, the game will be available to everyone. And if you join the beta, please let me know about any problems you encounter.