For those interested in playing Reason and Rhyme on your Steam Deck:
As of version 1.0 (the version released today), the game is comfortably playable on Steam Deck without any major issues.
There are a few improvements we have planned for a near-term patch:
Fix an issue where the map screen isn't responsive to controller inputs, requiring using the touch screen to dismiss / close the map.
Make the game aspect ratio match the Steam Deck screen so that there is no "letterboxing"