what is your highest amout of hours on one game?

I've spent over 1300 hours on Call of Duty World at war

Ark - 2,510 HRS
Rust - 2,284 HRS (Plus more on my second account due to my main being hacked and banned from rust.)

I've spent more than 2000 hours on Hearthstone, I've started 6 years ago

the game that took most of my time was World of Warcraft.

I have 3700 hours on gmod, i started playing darkrp and multiplayer in 2016 and keep playing since

988 hours on F1 2016. my youth is gone

i dont know how many hours in Leage of legends but i played this game about 11 years lol

1290 hours on league of legends :D

Not my highest but I have over 200 hours on batman arkham knight lol

Lost count in games like mario kart and COD. Zelda is up there too.