I.e., games that hooked you in and you couldn’t stop playing until it was finished. Not games that just happened to be unexpectedly short. And by “completed” I guess I mean the main story etc, not 100%ing the game :).
For me, it would be Catherine, Bioshock Infinite and Black Mesa (although I think I got to the final area then had to go to sleep and complete it the next day). I also played an ungodly amount of Hades in one sitting, but didn’t get the “full” ending in one day.
Oh my gosh, I played Black Mesa before the endgame released, you are a scholar sir
I’ve always loved Half-Life, and Black Mesa really does it justice. Xen was beautiful, even if it was still quite frustrating towards the end. I bought it at the 1.0 release, would be great to see if they’ve added/changed things now… they seem to be really dedicated to updating it!