For me it was Terraria, Satisfactory, Tetris Effect Master Mode, Minecraft with Mekanism mod & CSGO / CS2 (almost 2000 hours in CS alone).
Edit: There are so many answers that I might only reply if I have something interesting to say. I will read all of your answers though. 🙂
Edit 2: It has become too much for me and I have to disable notifications. Thank you for the massive response and please continue to discuss with everyone here. ❤️ 🫡
Darktide, once I finally got a good grasp of all the major mechanics, which it has a lot of.
Which is awesome because I got the game 2.5 years after its release, when it was finally in a playable and fun state where they finally implemented most of the features they promised and should have been in the game from the beginning, and because of the age I got it for only $20, probably one of my most successful Patient Gamer™ moves so far lol
Approaching 800 hours recently, and it looks like I’m still gonna be spending a LOT more time in it since the most recent major update introduced some noticable change to difficulty (mostly in ways I’ve always wanted) and I’m getting my rear end handed back to me repeatedly once again in the highest difficulty, like the good old days XD