Final Fantasy XI. I actively played from April 2004 to November 2011, and casually from around 2019 to 2021. My playtime in game says something like 500ish days, although that would include time I was logged in but not actively playing, but honestly that wouldn't account for much time, so it's still a fairly accurate representation.

Rocket League and Minecraft would probably be the next closest games, I think each somewhere in the neighborhood of 2000-3000 hours.

According to Steam, it's Skyrim at 788 hours, followed by Crusader Kings II at 615 hours, followed by Skyrim at 522 hours.

Honestly though it's probably Pokémon FireRed, my first ever save was over 500 hours when I eventually reset it, and that's not counting all the hours on an emulator

Probably World of Warcraft unfortunately. That was a long time ago though.

Probably Assetto Corsa. VR sim rig + Covid. It was just the best.

Most likely League of Legends.

Distant 2nd is Path of Exile with ~5k hours.

Minecraft is probably also in that ballpark.

Terraria with 1k hours.

Stardew valley with 700 hours.

I also played a ton of Maplestory back in the day but have no idea or way to estimate how much.

Excluding MMOs, Captain of Industry. Otherwise WoW, of course.

Probably Path of Exile 1, but fortunately I got it direct from GGGs website so it didnt track hours.

Try out POE 2 when it goes free to play!

World of Warcraft with over 11k hours. Guild wars 2 is probably 2nd with over 6k. The highest on Steam is Warframe with 2329.

For WoW and GW2, it's basically the same reason. I loved MMO games and the huge world you can explore. I found guilds in both that I vibed with, and still talk with some of those folks today.

For Warframe, the gameplay is top notch IMO. I didn't mind the grind (I was a MMO player, after all) and the selection of warframes and loadouts kept things from getting too stale. I mainly played with one of my friends I met through WoW, and we roped some friends into playing with us from time to time.

I still get the itch from time to time to get into a new MMO to try and relive the experiences I had from previous games, but those days are most likely behind me.

Somewhere between 10,000 and 15,000 hours of EQ2 since 2008, across all the characters i made there.

😐

For me it's Minecraft and Space Engineer (1,600 hrs). Maybe 1/4 of the time it's AFK while machines are gathering the work.

This old Korean MMO called Nexus TK. I think it was Nexon's first game (Arc Raiders). Picked it up in like... 1997? I played it very heavily for a few years on and off. When I say heavily I mean like 4-5 hours a day. It got bad at some points. Got off of it at times but always went back. I still pop on every now and then just to say hi to the hundred or so people who still play.

Number is pretty low in comparison to most comments on here, but I have 380 hours in FTL, so there's that lol.

World of Warcraft. Only played for a year back in 2010 but racked up an entire month of time played on my main, not even counting my half dozen alts.

Microsoft Flight Simulator (2020) - over 1000 hours logged in flight, countless hours spent learning and researching avionics, checklists, airliners, procedures, hardware, software addons, etc.

Spelunky*

Bloons 6 :)

Monster Hunter, easily. I've been playing since Dos.

It probably shouldn't count due to the nature of the "game," but World of Warcraft will never be surpassed by another game for me in terms of sheer hours "played." I put those two words in quotes because at some point the game became a job, and the hours played were almost like work or social time talking to friends. I haven't had an active account or played since 2020, so I can't check my hours; but I would estimate I had 200 days played on my main, 150 days on my primary alt, 50 days on my secondary alt... roughly 9600 hours total??

Outside of WoW, my next highest is probably a close tie between COD MW2, Counterstrike, Elden Ring, Ghosts of Tsushima, Oblivion, BG3, DOS2, and Skyrim. I can only focus on one game at a time, so I'll pick a game and play it exclusively for 6 months to a year.

The Outlast Trials.

Right around 400 hours

Islands of Myth.

What got me hooked is really the essence of the game itself. A multiplayer fantasy RPG with a global player base. It's a really cool concept that I've enjoyed in many iterations. EQ, WoW, GW2 etc.

I just never really stopped playing this one. One of the things I love about MUDs is that it's so easy to just have it running in another window. Killing a monster every 4 minutes during the work day. Chatting with folks and organizing groups while literally playing other MMOs.

I don't think that I could play WoW on one screen and GW2 on another with any efficacy and I almost certainly wouldn't enjoy it.

I've also really enjoyed the classes the game offers, the ability to multi class, and the reincarnation system which is similar to modern "prestige" systems. Except I can keep most of my earned exp while choosing an entirely different race and class combination.

MUD communities tend to be pretty great and this one has been no exception.

In regards to the screenshot "Mud age" is the same thing as /played or /age in MMOs. The amount of time spent logged in to the game.

Easily Kerbal Space Program. I gotta start posting some of my stuff. Got real into SSTOs after a couple thousand hours, now I have a damn fleet of the things. My latest achievement is an SSTO with both a full suite of scientific equipment (including Breaking Ground deployables) and ISRU, and with enough dV to make it almost everywhere in the kerbolar system, refueling and collecting science along the way.

My current goal is to send recovery crafts to bring every space probe back to Kerbin intact. These are dinky little disposable landers thay were meant to transmit science and then be deleted, but now I wanna play an interplanetary crane game and get them back. Clean up my tracking station without destroying any existing crafts.

I never hit even 100 hours in any game until I started elite dangerous. I'm almost at 1000 hours now. It's so dam good

In my lifetime?

Probably Doom.

Elder Scrolls Online, for me.

halo 3, rainbow 6 siege, battlefield bad company 2 and battlefield 3, 4

The many iterations of Counter-Strike.

TF2, 1,9k + 500 (old account) = 2,4k hours

Brawlhalla, 1,5k hours

The only game I have played enough to rack up a lot of hours is World of Warcraft. I started a few months after launch (after seriously trash talking it and preferring EQ2) and I still play off and on. I really dig the old history stuff in the books like The War of the Ancients trilogy and Lord of the Clans. I don’t really raid or join groups for stuff, I’m a “filthy casual” that chases pets, transmogs, mounts, achievements, and that sort of thing. I play one of the worlds largest MMORPGs in solo mode lol

After that, maybe The Witcher Adventure game on Steam because it’s fun. Or Halo Reach back in the day when I played firefight doubles with a buddy of mine.

Factorio. 1600 hours. I admit that is a rookie number.

Civilization V, especially considering it might often stay open all weekend on the second monitor. Also saw Eve Online mentioned; that took untold amounts of my life, but I've been clean for a long time o/. Arma 3 with it's various mods also has well over a thousand, what with it's endless modular gameplay and annoying ass realism (hiking sim). But right now at this very moment I've got X4 going on a few hundie. I've heard it called Eve Offline; I dunno if it's exactly that, but it can be incredibly frustrating and clunky, but also crack cocaine. I think I've just barely figured out how to play it.

Steam says PUBG at 1280 hours... I don't know how it hasn't been surpassed yet. Cross-platform I know Halo MCC comes close.

Minecraft would beat them both if I had stats on it though, so many modpack replays.