Humble Bundle has a
Stimulating Simulator Sale. My most enjoyed game at the moment,
Euro Truck Simulator 2 is 75% off (€4,99) at the moment. I can greatly recommend the game if you are into something relaxing and are in possession of a steering wheel for your PC.
All extra maps except for the most recent Beyond the Baltic (which is -30%) are 70% off. My personal favourites are Scandinavia and Beyond the Baltic, though geographically Viva La France! is the most obvious one for a first buy to expand the basic map, that covers England, the Benelux, Germany, Switzerland and Austria but only part of France.
P.S.: you can vote on the community wishlist for Euro Truck Simulator 2 to come to GOG here:
https://www.gog.com/wishlist/games/euro_truck_simulator_2 https://www.gog.com/wishlist/games/euro_truck_simulator_2_incl_dlcs P.P.S.: don't get tempted by the first game, even though it's less than a euro. The second game is vastly superior: much more realistic, much better driving mechanics, far more options to configure the way you steer, driving real brands of trucks (with the first game, they didn't have a license for the truck brands yet). I tried it out of curiosity, but it's has the ingenuity of my first Lego compared with the Space Shuttle, while needing Space Shuttle skill to drive, whereas the second game has the ingenuity of a Space Shuttle, while requiring only Lego skills to drive.