Grim Dawn (currently playing Community Season 7! check it out @ https://grimdawnleague.com/, Dead Cells and Terraria (and most of that time unmodded - i just love building cozy or not so cozy homes).

In descending order: Skyrim Fallout 4 Starfield

Morrowind is a game that has extreme hours too, but not sure if it is 1000+ (yet).

Ark.

Dark age of Camelot. 6000 hours on my main character. I prefer not to think about how could life be different now if I had not started this game…

I am Not even close to 1000h but devinetively Factorio. Be aware, this game is a massive time sink and makes you play for way longer than you want. Especially with the new expansion you can spend enormous amounts of time in this game.

Project Zomboid, Valheim

Minecraft...

Pavlov VR

Satisfactory

Monster Hunter

Alan Wake 1. It's one of the few games i can play over and over again and not get bored. Sometimes i'll just pop in and play a chapter when i want something to do. I keep it and it's sister game, Alan Wake's American Nightmare on system at all times just so i can play it

Don't Starve Together scratches the MMO itch for me. It's not an MMO, but there are public servers where you can hop in and hang out, raid bosses and whatnot. I have ~4k hours in it now.

For some context I have insomnia. Stellaris isa game I've been able to fall asleep playing. Eventually it auto pauses but that's fine. It's a game I will always play because I find it peaceful and relaxing

Wow, so many posts 😵‍💫 Sooo I think I'll be the one to mention Elder Scrolls Online ^.^ I've got 1800 hours in that and miss it pretty bad v.v Am stuck on a laptop that can't run it (nor much else) playably :-\ Anyway, it's got many things to do. Three faction storylines, lots of side stuff (everything can be played at any level; people will take low-level characters into Trials and not even worry about it), crafting, character build funs deeper and more interesting than they seem, just plain wandering around peekifying all' the Elder Scrolls places... Idunno, it just somehow kept me of all critters hooked for quite a while, which is very odd. I tend to get bored of things realquick 😅

I only have 800 hours in it but I suppose I can second (or, well, nth) Warframe? 😅

Apart from Flight Simulator 2020 and DCS, I absolutely love games like Euro Truk Simulator 2 and Snowrunner. I put ungodly amounts of hours into those. Especially ETS 2 is incredibly relaxing. No pressure, just a lovely drive. It’s definitely not for everyone though.

Dayz.

Just hit 3.5k hours and it's still the most exciting game I've ever played. Nothing else gives the same adrenaline kick as a good encounter or a fight in Dayz. Also a great game for meeting new people as talking to others in this game is a must.

The only two games I have that much time in are Factorio and Satisfactory.

Path of Exile. Hands down.

I just broke 1400 hours and still going strong. There's so much to do and so much to learn, and it's so good at rewarding grinding and keeping you chasing those incremental improvements. It's 100% replaced RuneScape for me.

I have broken 1000 hours with Cookie Clicker, Guild Wars 2, RuneScape, and Eve Online. I don't recommend the latter two anymore, but CC and GW2 still hold up.

Honorable mention to Factorio. I'm still in the hundreds but it's climbing.

Stellaris. I'm almost at 1400 hours in the game and while I now play it a lot less often than in the first 1000 hours, I still get the itch to play it again a few times a year.

Empirically, Final Fantasy 14. Also my only 1000 hour game since games services started logging playtimes in a more durable way. Only other games I can think that might have touched that time are Diablo II and UT99, but both of those playtimes are lost to the sands of time.

Would be arma 3, dayz and stalker series. My currently favourite is stalker Anomaly.

Elder Scrolls Online, as long as you find a good group of friends.

I also nearly have 1000 hours in MGSV Phantom Pain.

Monster Hunter World and Don't Starve