Asklemmy

Got around 300+ hours into Borderlands 2 and around 600+ into Warframe

Hollow knight ~110h

Terraria and Path of Exile

Planetside 2

10 years and counting

Starport GE

15 years and counting

On steam it's dota 2 with about 3k hours but really my most played game is the old f2p Combat Arms. I nearly exclusively played that game after school to bed for like 4 years, I probably had over 6000 hours logged. Still talk with the friends I made there a decade later.

Swtor

Team Fortress 2 with over 1,200 hours. I've been playing it regularly for over a decade, so the hours have added up

Grim Dawn with 800+ hours. Slay the spire is 2nd with 600+ hours

Any of the Championship Manager games.

Kerbal Space Program (not 2) has around 300 hours on my steam account. I have played around equally much on another account. KSP2 is painful to see perform so badly.

Either quake 1 as a kid (netquake CA)… RTCW as a teen, or world of Warcraft as a growing adult.

4000 hours in the Sims, Sims2, Sims3 and 4. Around 8000 in WoW Retail and around 2000 in RimWorld.

Metin2 my whole childhood. Then Minecraft and Counter Strike

Probably GTA Vice City back in the day. So much room to just dick around and kill random people.

XCOM 2

1. Doom I and II with who knows how many hours since Christmas 1996.

2. Minecraft since 2011.

3. Binding of Issac with close to 1k hours.

4. Factorio with 850+ hours and currently rising.

On Steam my top game is GTA V with like 1.1k hours, I haven't played it in over 2 years tho.

But the actual top game is probably Minecraft, tho it's hard to get an exact number.

Chose to live the DINK life, loving it.

I racked up about 9000 hours in WoW before quitting, bit over 3000 hours in Runescape.

Minecraft. I don't know how many hours, but I bought it before nether portals were a thing and I've been playing it ever since. Sometimes a game just clicks for you.