Most hours spent on one game?

3,980.7 hours in Arma 3. I've literally been playing this game all the time for the last like 5 years. If you like more realistic types of shooter games, Arma 3 is literally just a combat sim. Although I must admit, as of recently I've kind of gotten tired of playing. Not playing the game, but tired of the community. I like to play the game in a very specific way, and it's really rough finding any communities that have a few of the aspects I like to play in, let alone all of them.