Portal is one of my favorite games. I’ve never been too interested in the shooting games, the type which remains consistently popular. Instead, I enjoy puzzle or strategy games with a bit of action: Warcraft I, Zelda (BoTW, ToTK), Tomb Raider and so on.
I love the dripping sarcasm of GLaDOS, I find Wheatly hilarious, and find the puzzles nicely challenging. I just finished my second round, the first being some six or seven years ago.
Portal
Portal 2
I had my son play these games and to my great surprise, he beat them both at only 11 years old. We also enjoyed listening to many songs created from this game which I still enjoy.
The YouTube channel with those songs are here: