The game in my Steam library with the most hours played is.....PAYDAY 2.

But I didn't actually play a thousand hours of it. In the late 2010s, the heat in my condo barely worked and our self-managed association refused to acknowledge it because "nobody else [was] having problems with their heat." I had all the windows plasticed up with heavy blankets literally nailed to the wall. I had to abandon the living room and bedroom entirely. I emptied the smallest room (12x10) and moved my mattress and desk in there...In addition to the playpen for my two rabbits that took up the rest of the free space.

You might be wondering what that has to do with PAYDAY 2. Well....the game revved up my video card to max on the main menu so my PC became a supplementary heat source at night...

Good times. Thanks, PAYDAY devs!

ETA: In the spring, the guy who handled yardwork noticed the flowerbed was kind of sinking on one side of the building. That's when they discovered a leak in the radiator line...small enough that 11 units didn't notice but big enough for the water pressure to not reach the farthest unit from the boiler....the unit I owned...