Released back in 2015, UnderRail from Stygian Software is an old school turn-based isometric indie role playing game that focuses on exploration and combat. Now, they're trying to get it looking good on a Steam Deck.
In the latest update, the developer mentions an update coming next week that "will be focused around making the game functional on Steam Deck and Proton in general". However, it's not going to be quite perfect yet as an improved UI and gamepad controls are to come later. Still, even some fixes are better than nothing for those who want to try it out. The developer said for now it will "still be completely functional on Steam Deck" and they've already fixed some performance issues with Proton, along with getting an on-screen keyboard to appear when needed. UnderRail will also be getting Steam Cloud support.
These are the kind of updates from developers we were hoping to see. While it may not be "native", this sure to me looks like a good level of attention and support. More like this please!