Most hours spent on one game?

I always wondered how many hours I wasted on league glad I quitted that addictive game played that thing since the ending of season 3 till season10

Not too much, really. Just Kenshi with 477 hs.

skyrim, prob i had spent 3k hours on this game

rainbow six siege , 1500+ hours lol

About 3000 on path of exile

My personal record is 12 hours on rainbow six siege rankeds

Probably Modern Warfare 2, but when I was younger my friends would come round to my house just to play Mario Party 2, I wouldn't be shocked if I had more hours in that

A whopping 2500+ Hours on Smash bros. Ultimate. though, Apex is giving it a run for its money

garrys mod + minecraft.

garrysmod: 2000h
minecraft: 5000+

CS:GO - Over 1,000
Garry's Mod - 400