While the game does not run on the Steam Deck/Linux out of the box, you can manually install the dotnet junk manually by using Bottles (found on the Discover store in desktop mode on the Deck, and similarly as flatpak on regular Linux), enabling Steam Proton Prefixes integration in the settings, and then once you find the game (might need to restart the app, and if that still doesn't work, try running the game at least once (don't click anything, just terminating it via Steam once the error shows is already enough), and restart Bottles again); then go one by one thru all the "dotnet" in the dependencies in Bottles and install them one by one (probably doesn't matter if some of them fail to install or warn they may not install but install anyway), including the "core" ones (I have not bothered checking which versions are needed, just added all of them, takes too long for each). After all that is done, you can close Bottles, close Steam in case you had it open, and reopen Steam/go back to game mode on the Deck; and then you can finally play the game (no official control mappings yet, but it can be played with just mouse, most of it is already in the standard no-layout stock layout, you might just need to set an unused button for the middle-button mouse click if I'm not mistaken).