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. 🙂
Oh, I should add Pokemon Unite too, although I’m not very proud of that one…
I didn’t even know that game existed 😅 I guess everyone has their guilty pleasure games.