I‘ve checked a few of the resources I found here but I seem to be unable to wrap my head around this.
I want to play one specific game purchased from GoG on my Steam Deck. It only has a windows installer. I don’t need a fancy launcher (at the moment). The game has low hardware requirements so should run fine via emulation/proton…
What’s the easiest way to install and add this game to game mode?
Edit: clarification on the launcher. I don’t necessarily need one. If it is the easiest way to get it done I still would consider installing one.


If you don’t want to go the Heroic route (you really should go the Heroic route) you can
Trouble with that method is that Steam always creates a new Wine prefix (a kind of fake Windows drive) every time you run a new none-Steam-game with Proton. They can pile up and take unnecessary space away. It also makes it harder to install dependencies or mods or add ons.
So yeah, Heroic is the way.