Most hours spent on one game?

Probably Minecraft back in 2014 but recently It's been Pavlov with 223 Hours

Probably Minecraft. Spent thousands of hours with it. It's an infinite fun source.

Garry's Mod with 6k hours, nerver gets boring, for real.

Idk minecraft unlimited hours xd, i was playing it for 4 or 5 years straight

Over 500 hours clocked in War Thunder, but hell if I know how much I've sunk into WoT... Or console games from the bygone era, they didn't have counters either.

Has to be Garry's mod. I have 8000+ hours spread over two accounts.. Missing the days where i was able to just play all day.. Now i have to work :D

15 THOUSAND hours in Garry's Mod
15,000
THREE ZEROES
https://imgur.com/a/e6JSeVL

Although its a shared alt account :/
Adding up all of my alt accounts I'd say, personally, I have ~8k

I would say more than 400 hours on a game like Pokemon

Gmod actually 6k hours xD playing in 2017 - 2020 soo much

League of legends for sure , more than 5k, not planning on stopping anytime soon.