No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $22.8K — a different platform, not this one.

18 Wheels of Steel: Extreme Trucker 2

Non-Stop Extreme Driving Action! Take this Job and Love It! Build your trucking empire from a single hauler to a vast network of convoys crisscrossing the globe’s most extreme roads.  Can you feel the hair on your neck raise? Product description: The Tough Get Going! Deliver your extreme loads under deadline all for the bottomline. Hazards Are Everywhere!  Travel across 5 hair-raising locations including ice roads, steep mountains and thin rainforest roads. The Heat is On! Risk it all by carrying maximum/minimum loads, oversized loads, high risk cargo and more!  Balls to the Wall! Move it better and faster than your competition with 13 big rigs. Profit is King! Build your reputation by getting the job done right. Bigger and better jobs wait for the trucker who gets'r done!  Key features: 2 New locations – Montana and Bangladesh