With 2 days left in the 2021 Summer Sale, this suggestion thread could prove helpful to people shopping around. Here are some GOG games I've spent many hours on. Looking forward to reading yours.

Divinity: Original Sin: I've never played a tabletop RPG, yet this game feels like what a tabletop RPG would be when translated to video games. Light on story and subject matter, this was ideal for me. The turn based combat and adventure-game-like hints made this a pleasure on which to spend 120 hours on, doing almost all side-quests. I played this co-op with a fri3nd on normal difficulty, but I might as well have played it single player on the hardest difficulty there is. You see, this was my friend's first RPG of any kind. He got a mage he turned into a clumsy range fighter which forced me to alter my rogue/thief into a tank, just so I wouldn't get accidentally hurt by his shenanigans during combat. He also enjoyed treating it as a GTA rampage, which didn't help much with bartering. His character had no thieving skills, but he'd insist on stealing stuff when I'd chat with other NPCs, which in turn would result in combat, simply because he'd get caught. And that's how you add up 120hrs of fun gameplay. Or so I thought. (HowLongtoBeat.com: 62 hours).

Divinity: Original Sin 2: Played this one on my own, and spent 115hrs on it. Much longer than the main story line. Did a lot of the side quests, even when I didn't have to. For example, there are a number of ways of leaving the first area, and I had unlocked all of them through their side-quests. Why? Because it was fun. The story in the sequel is darker than its predecessor's story, which I didn't care much for, but the game mechanics were much better. Combat is much better and "fairer", in a sense. It's a better game through and through, though I personally prefer the first one. By the last island, though, I left 2 smaller areas unexplored and went straight to the end game. After so many hours on it, I was getting fatigued. Which is a different experience than the first one where I just wanted more. (HowLongtoBeat.com: 57 hours)

Kingdom Come: Deliverance: Absolutely love this immersive-sim. I know it's not for everyone, not by a longshot. The combat takes a lot of getting used to, the pacing is slow, you have to map your way around the area, the RPG elements are quite straight forward, and levelling up doesn't turn you into a god, but refines your skills. So, if you're bad at the game, maxing your skills up won't actually help you much. However, this is probably one of my favorite games, and I'm not usually quick to appoint a favorite. It's an immersive-sim, so if you're not big on those, maybe you should skip it. Otherwise, if you're looking for a challenge with quite some nice storytelling, give it a chance. I spent 80hrs on this, and will definitely revisit soon. (HowLongtoBeat.com: 41 hours)

The Elder Scrolls III: Morrowind: I don't know how many hours I've spent on this. Probably too many, by my standards. I started playing it in 2003. I think I finished the expansion Bloodmoon 8 months later. Up until then I was simply exploring, doing the occasional quest, trying to exploit the game's mechanics because I was too low level to even play the expansion (I didn't know that at that point). You were given a world and was let loose in it. By the time I had decided to do the storyline of the main game, I was already a god, stats-wise, so that was a cakewalk, but still fun. I still haven't tried everything the game has to offer, and only finished the 2nd expansion a year or more ago through GOG. In any case, every time I hear the intro music I am transported into a world of which I have only fond memories. If you're into action RPGs, this is one you should try. There are mods to help with the dated graphics for younger players. (HowLongtoBeat.com: 45 hours)

Heroes of Might and Magic III: Another game I don't know how many hours I spent on. From 2001 till now, it's the only game I'll revisit at least once at some point throughout any given year. I had spent too many hours in hot seat battles with friends, then did the campaign, and now still play random generated maps, trying to out-exploit the AI. Turn-based tactics with some management and light RPG elements. Still haven't played the expansions, but I'll get to them. I only have around 40 hours on GOG, and that's not counting the hot seat battles, campaign, random maps or even the year I spent playing HoMM3 (and nothing else) with a random map a day. Probably my favorite game. (HowLongtoBeat.com: 60 hours)

Cyberpunk 2077: A controversial pick, but here we go. I had no expectations of what this game would be for me. I'm old (by gaming standards), so I've learnt to leave expectations to others who enjoy that hobby. The game was a fun action RPG with themes that interest me. I spent around 75 hours on it, which is a lot less than many other people on here, but I enjoyed every minute of it. I was lucky to encounter much less bugs than what was reported, though there were a few glitches (even then, it had less glitches than Kingdom Come: Deliverance did). I didn't expect and didn't want a GTA game, so some complaints concerning that aspect from other gamers didn't concern me. I treated this as a first-person Divinity: OS game of sorts (again: "of sorts"), and got 75 hours of fun out of it. I played a stealth/netrunner build, and according to some YouTube videos, that's a completely different game than guns blazing. I'm assuming I'd have a lot more fun if this were an immersive sim (it feels like the basis is there), but even for what it is, it's a lot of fun, especially if you're into the philosophical aspect of cyberpunk literature and entertainment. (HowLongtoBeat.com: 22 hours)

Hope this helps some of you make up your mind in case you're shopping around.

Looking forward to hearing what are some of the games you spent more hours on than you should have.

You've listed only the main game estimations from Howlongtobeat. I highly doubt anyone ever went through Cyberpunk in 22 hours on their first playthrough, and the same goes for most games - unless your job is playing video games and you don't like your job, you probably side-quest a little.

Your estimations all sound on point for someone who goes through most of the game but isn't a 'completionist', at least for the games I've played. You spent a bit more on Divinity:OS than me (120 vs ~108), and a bit less on Cyberpunk (75 vs ~100 (what can I say, I actually enjoyed it enough to do everything except those 'pointless shootout on the street' events (which still isn't 'completion' as far as the in-game 'achievements' are concerned))).

With all that said, a recent one for me was AC: Valhalla. Main+extra is 89.5 hours, while it took me ~118. I wish I could say it was all fun, but eh...I'll wait a few years before playing another AC.

No Man's Sky: to date I'm almost 6000 hours into it. Most time I've spent on any game.

Neverwinter Nights: The champion for time spent prior to NMS, at around 1500 hours.

Icewind Dale: not sure how many hours, but I've completed the game over 20 times.

Baldur's Gate Completed about 1/2 a dozen times (not speedrunning either).

I blame my need for glasses on playing Elite on the BBC B using a portable B+W CRT TV.

forum games , maybe 30min , they deserved 0 :P

Not sure it's more than I should have, on the contrary, but...

Slay the Spire: 538 hours. Won the game with each of the 4 characters on each of the 21 difficulty levels.

King's Bounty: The Legend: Three full playthroughs (Normal mage, Impossible mostly-lossless warrior, Impossible mostly-lossless mage), each around 100-150 hours.

Desktop Dungeons: First playthrough was in 2015 (didn't time it, but certainly much more than 100 hours, as it was the only game I played for two whole months). Currently on my second playthrough, as a filler between other games (56 hours, not even close to halfway through).

All RPG, i like exploring, talking to all NPC, do all side quests and nerver skip any cutscenes even after multiple time playing a game.

Bad North - 21 hours. Each run is supposed to be 5-8 hours. But I missed on an achievement in my first run, so I had to do hard mode all over again. After that, I just finished grinding out a 15,000 kills achievement.

Why do gamedevs put such arduous AND meaningless achievements in their games? Sometimes games on GOG without achievements are a blessing in disguise. I find that those ones much more enjoyable.

Wow, I'm a lightweight.

Will probably try No Man's Sky when I clear my backlog. Seems like that game needs its own year.

I've completed most LucasArts adventure games countless times (was playing the Monkey Islands every summer for many years, for example. Might re-do that). Don't know how many hours on those.

Non-GOG: spent 100 hours on Hitman (2016), and 50 on Hitman 2 (2018). Still hope they release the new trilogy on GOG when the Epic deal wraps up.

As for the HowLongToBeat estimations: they're usually pretty spot on with the way I play, except when I really like a game, like the ones I listed above.

Also, LOL

Dude. That's f*cked up.

Starbound wasn't worth the 100+ hours I put into it, and neither was TOME 4.

On the good end of things, I've spent more time in Avernum 2 than anyone reasonably good; I wanted to make sure I had picked the gameworld clean of any unique loot.

On the shrugging side: Stendhal MMO. It's mostly a place I visit rarely because it's neat.

No Man's Sky: 500+ hours and still going... It's kind of like a single-player MMO (yes, I know it also has multi-player, but that's not what I've been doing).

Gothic 3: Played through a number of times (maybe even once-a-year or so), each time never rushing through but instead "living" there and enjoying the "open world" (which is one of the best of any game I've played - and completely seamless [no "zoning], anywhere). Yes, "the combat is clunky" (as many like to report), but if you go Ranged Bow, it's actually pretty good after you upgrade a bit.

Stalker CoP: Mainly via the various "full-story" mods, like the various SGM's. I've played through some of those mods over and over again. Sadly I can't get it to run on my "new" WIn10 box; although the various "open engine" ones run great (like Call of the Zone); but not the "original engine" ones like SGM. And I don't know how to get the "open engine" to work with them. /sigh [Side note: I've upgraded my nvidia drivers twice since last trying - so maybe now it will work - but I doubt it - but I do need to try...]

Thief: Mainly Thief Gold and Metal Age user-missions. I've played hundreds of them, and many are "better than the original missions". Alas, like Stalker, I have trouble running them on my "new" Win10 box, so haven't played any in awhile - but as far as "total time", I've put hundreds of hours into them.

MMO's: There are a few MMO's I've played a lot.:

Anarchy Online: Easily hundreds and hundreds of hours. While I know it's still going, it's been at least five years since I last played it. But, I played it a lot back in the day.

SWG: In hindsight, my favorite MMO. Again, hundreds and hundreds of hours. Fond memories. I miss it.

Neocron: Hundreds of hours. It (was) a bit clunky; and lots of "zoning", but I loved the "world".

Fallen Earth: Same: Hundreds of hours. I loved the "world".

ToonTown: [cough, cough]. Yes, I loved ToonTown, and played it hundreds of hours. More recently I played the "open" (and free) ToonTown Rewritten; completing the entire "quest line", but then I kinda let it fall by the wayside (didn't get into the "boss" stuff). Rewritten is well-worth playing, and I may get back into it again.

(I've played other MMO's, such as WoW, EQ2 and LoTR, but not to the extent as those listed above).

***

Those are some of the ones that come right to mind...


[Edit]: Some typos.

Street Fighter V - 1812 hours (Steam). Given that I'm not even in Diamond league it's safe to assume that I've spent WAY more hours than I should have.

fallout 4 - Took me 5 YEARS to complete 1 playthrough on survival mode!

Because Bethsoft are DICKS!

Path of exile.

This one is the only one I regret.

The constant pointless grind, waste of currency trying to craft a bow with two very rare suffixes

I feel bad about how much time I spent on it. Couple hundred of hours on my last character.

Burnt through currency acquired over three leagues.

Disgusting and will not play it again.