Asklemmy

If we count map editors then most likely C&C: Generals: Zero Hour or ARMA 3.

If we don't could editors then probably Halo 3 or MW2, maybe Stellaris.

Minecraft Factorio EVE: Online Cs:go LoL

7 Days to Die. It's an incredibly underrated game. I'd describe it as Minecraft, but for adults.

What, recently?

Historically, Destiny or Borderlands, probably the latter. But lately, I'm spending all of my time in Factorio.

I haven't looked at the hours stat; it'd probably only depress me.

I have nearly 3500 hours into Apex Legends (played competitively a little in college)

Also somewhere in the realm of 800 hours into factorio, a good 500 into Skyrim and literally uncounted thousands of hours into minecraft.

Risk of Rain 2, man. My absolute favorite game of all time.

Before the community died off I had put just under 20,000 hours into Subspace / Continuum (mostly on EG). No, that's not a typo. I learned what addiction looks like as I grew older.

Between that, NexusTK, The Realm and an unhealthy obsession with SNES JRPGs I don't know how I managed to make it through grade / high school...

Honestly? Skyrim. Played it a few times on different platforms. Different builds, different experiences.

Borderlands 2

Idle Wizard 6k+ hours

NGU Idle nearly 4k hours

MHR Sunbreak 1k+ hours

BattleTech 1k+ hours

MH World 800 hours

Those idle games running in the BG sure racked up the hours. Ran them for more than half a year before I realized I was just wasting power for something senseless.

Haven't checked in a while but I think my personal record is 1400+ hrs in Europa Universalis IV.

I have 1000+ hours in Forza Horizon 4 & 5, mainly due to weekly FOMO (new car every Thursday).

~800 hours into PAYDAY 2

~1800 hours in various sim racing games, assetto corsa, project cars 2, dirt rally/DR2, rFactor2.

And some ~300 hours in Stationeers

Either skyrim or oblivion. probably Oblivion. It's the most immersive game world I've encountered. Emminently replayable.

Breath of the Wild. I put about 300 hours into it.

Easily 10k hours throughout the Diablo series.

Over 750 hours in Total War: Warhammer II.

Probably 2,000 or so in Guild Wars 2.

Probably Terraria

Call of Duty Modern Warfare

The Elder Scrolls Online

Path of Exile, around 3k hours and it is still my favorite. Every 3 months you get to play again with a different twist, and Path of Exile 2 (just an update, but a huge one) is being worked on and will likely release next year.

League of Legends, no doubt (and no idea how many hours across my two main accounts). Just... yikes on a bike, that one.

Other tops probably Sims if I can count all the different games. Stardew and animal crossing are up there as well, I'm sure.

Either Sims or Transport tycoon Duluxe

Old School RuneScape, by a lot!

I'm over 10k hours on FFXIV, been playing since launch. Could get an exact answer when i get home. Next closest is Skyrim with around 1,500.

Edit: it's over 14k hours, more than 584 days worth. It'd be much more if I had more time the last two years but I can't do much than dailies with a 15 month old!

1200 hours on Halo The Master Chief Collection on steam. And absolutely countless more on Halo Reach on the Xbox 360.

Quake Champions for sure. Best competitive shooter I've ever played (and I've tried all the popular ones), great option if you like movement & aim centric games

AOE II was my childhood. I played that game for years.

I would guess I have multiple thousands of hours across the Halo and Pokemon series. My highest played steam game is dead by daylight (gross) at 1k hours. Deep Rock Galactic and PUBG are at around 500.