What games were so good you completed them in one sitting?

Inside!

Sleeping Dogs pulled me in real hard. I‘m super salty there‘s no Sleeping Dogs 2, I loved everything about this game.

If any of you like GTA style gameplay, Sleeping Dogs is that plus kung fu movie flair (even has a cheesy king fu story DLC).

Nioh, Nioh 2, Code Vein, Dark Souls 2 (I know), Fairy Fencer F, and Ni no Kuni 2 also put me in chains. Crusader Kings III has no real story but it made so many evenings disappear that I try to legit stay away from it lol

Cataclysm Dark Days Ahead. Because I usually die in like the first week in game lol

Portal 2

I didn't do the whole game in one sitting but I was glued to my chair for hours when I started Deus Ex: Mankind Divided. Remember looking at them time on my phone and going, "huh, it's after midnight". Then again later and finding out it was the beginning of daylight savings time. Went to sleep, woke back up, and played all day again. Fantastic game.

Portal 1

Return of the obra dinn. Both because it's good and because I was worried my train of thought would be interrupted if I took a break. Took me ~9 hours and gave me a really bad headache afterwards, no regrets.

Inmost - short platformer/metroidvania game with a brutally emotional storyline.

Far: Lone Sail - short puzzle/platformer game. Chill as fuck, great atmosphere and music. Story is only really gleamed from the environment that you traverse.

Half life 1 and portal 1

super metroid and metroid zero mission. Man I love those games.

I wanna say Yoshis Island for SNES but it was so long ago I don't remember if it was one or two sittings. Dunno about the "that was so good" part though. Just completed it :)

Spec Ops: The Line. I started playing it in the morning, the story kept me engaged (and the gameplay was fun enough). I played it all day to its conclusion.

Max Payne!

Plants Vs. Zombies!

My wife and I just sat there like... zombies... for the whole day and night until we finished it, and then went to bed surprised and happy when we got our musical reward at the end!

The Flash gaming era at it's best.

The most recent is Stray. I loved the worldbuilding and well, the cat.

I also completed bioshock infinite in one sitting with my brother when I was younger. That shits a core memory for me now lol

Stray.

antichamber literally kept me up all night until I finished it at 9am

Carrion. I was surprised how much fun it was. There's some nice but not overly difficult puzzles and some frantic bursts of combat

Surprisingly, The Witcher 2!
I believe 3 and its DLC had come out at that point, meanwhile, i had paused the first, which I had bought on release, somewhere before its third act. Somehow I got back into it and finished it in a few weeks.
Then I booted up the second opus and the changes were so drastic! It was amazing! Everything that was a hassle in the first was pretty much gone!
And that story was fantastic, with a proper dilemma at the heart of it : you had to pick a size and stick with the consequences.
I finished the entire thing in a very long weekend, completely enthralled and picked up the third instantly afterwards.
And somehow things got even better!