What video game do you have the most hours on?

You can share what video game you have the most hours spent playing in this topic. I have approximately 30 days of play time in Minecraft iirc, which is equal to 720 hours. The next most played game I found was Pokémon Alpha Sapphire, which has 287 hours and 39 minutes based on my Nintendo 3DS's Activity Log.

My image hosting didn't work perfectly, but this is my evidence that I have this amount of time spent playing Pokémon Alpha Sapphire. The start time isn't actually correct, I did not start in 2012 but my birthday in 2018 or 2019 iirc.
https://imgur.com/a/Y9yPvHe

Minecraft, 855 hours
2nd most played: Mario Maker 2, 280 hours
3rd Most played: Smash bros. Ultimate, 270 hours

Súper Smash Bros Ultimate has 362 hours on my switch (I’m actually serious, I have that much time on there)

1209 hrs on Rocket League

670 hours on Super Mario Maker 2
260 on Super Smash Bros Ultimate
245 on Mario Kart 8 Deluxe

Not sure exactly how much but by far my most played is MK8DX

1 - Mario Kart Wii
1.5 - Mario Kart 8 Deluxe
2 - Sonic CD
3 - Super Smash Bros. Ultimate

Over +500 hours for MKDS and CTGP-Nitro on my DS emulator...
And +450 hours for this web lol

like 500 on Minecraft and 250 on MK8Dx (estimated)
Also MKPC probably has close to 100 but idk how to check

1252 hours on Fortnite
556.9 hours on Total War: Warhammer 3 (756.2 hours across the whole series)
420.2 hours on Dead by Daylight.

Minecraft could be highest, but I can't check.

on steam:

according to steamdb, i have a total of 2926 hours on steam games

notes about each game:
#1 cs2 (869 hours) - also includes cs:go and the map editor (though this probably totals to below 40 hours at most)
fun game but haven't really played it lately

#2 garry's mod (771 hours) - i believe this includes the map editor as well which i definitely have a lot of hours on
great sandbox game, so many things to do in it and a lot of custom content

#3 cod mw19 (105 hours)
it's ok. older cod games are better but the multiplayer is pretty fun, i like levelling up guns to get the gold camo and stuff

#4 sonic adventure 2 (94 hours)
most of this playtime is from years ago (like 2021) but still a good game, spent most of that time in the chao garden

#5 casualties unknown demo (81 hours)
i have since bought the full game (released a few days ago), in which i have 5 hours
great survival game i probably would never have even considered trying, though it is very difficult (realistic health system....)

#6 cs: source (76 hours)
this one includes the map editor too, i'd say around 20 hours were in that
another cs game, cs2 is better gameplay wise but it's great for playing with bots + unlocking achievements is fun

games on other platforms of note:
fortnite (epic games launcher, 402 hours)
have not played in a very long time (quit around 3 years ago) but it was pretty fun with friends and had an ok gameplay loop

animal crossing: new horizons (200-ish hours, not bothered to check)
another game i only really played a few years ago, one of my favourites from the series (wii is the best one though)

tomodachi life (3ds, 73 hours)
another "endless" game which i play on and off every so often, the new one looks fun so i might get it

pokemon black (100~ hours)
got it for cheap at £50, it's one of my favourite pokemon games (i have a unova living dex )

cave story (3ds, 57 hours)
i have WAY more hours on this game but on other versions, it's a great platformer (and free ) with a decent bit of replay value (really hard annoying final level secret ending)

mario maker 2 (80 hours)
no notes, good game

no way to check hours but shout outs to the littlebigplanet trilogy, i most likely put over 200 into all of them combined

minecraft too, played on many different platforms and versions (no notes, it's good)