RetroGaming

None. Every game was a product of its time, hence bound to many external factors.

Let it go... And take the chance to experience what you haven't yet, there's more to do, than can ever be done.

(on a roll with 2 Disney references, apologies)

Warcraft 3: Reign of Chaos (and it's expansion, The Frozen Throne).

The level of storytelling for a strategy game's campaign completely blew me away at the time. The "good"-coded guys are haughty and rigid, the "bad"-coded guys are (mostly) just trying to get by in a world that rejects them at every turn, not to mention you play as the lovable young protégé and prodigy that slowly casts aside his humanity until he becomes a "big bad" for everyone else. The campaign has world-altering events take place, and you actually get to see the world altered after the fact.

Persona 5 Royal

Detroit: Become Human.

Can’t believe nobody mentioned Last of US.

Final Fantasy 7 Chronotrigger Secret of Mana

Outer Wilds

Portal 1 and Portal 2. Every time.

AC2

Dragon Age: Origins

To the moon! The game was so emotional.

Spec Ops: The Line

"Do you feel like a hero yet?"

Also Starcraft: Brood War, Shadow Watch, and, yah, Morrowind. I took over an entire house in Balmora to serve as a treasure room. Then hit the max item limit and had to re-place everything by hand while also taking over another house.

A lot of good ones here already listed, some of those I've started and veered off due to busy life with kids.

What I didnt see was uncharted 4. Never played any other in the series, but bought that one from steam sales. You know when you picked up a good book which you couldnt put down but had to read through as fast as possible? Or new tv series that you had to binge? Well surprisingly uncharted 4 was that for me last year. After I was finished I felt empty: "whats now?".

A very few games have gripped me that way.

Splintercell Chaos Theory.

Good lord...

Dark souls 1 maybe?
Or Bloodborne. Maybe XCOM Deus Ex sequels. I might need to play those again.

Planescape: Torment. So much to erase.

Pokémon Mystery Dungeon: Blue Rescue Team and/or Explorers of Sky

Ninja Gaiden NES. I only have good memories from that game. When Super Mario Bros was the baseline, Ninja Gaiden was incredible. I played so much I could finish it on demand with barely any slips.

Celeste

TUNIC. It is such a unique game with such a unique puzzle that I don't think it can be replicated.

Obra Dinn

Nier Automata

I first played it on the Switch because I didn't have a PC working then. Now I have my dream PC, and can't bring myself to play it again

Syberia

Surprised no one mentioned it

The last of us or bioshock infinite

Prince of Persia: The Sands of Time. A game of pure charm.

I used to habitually replay it every Christmas until one year it just felt too janky. They were supposed to be remaking it but the expected release date came and went without a word and now it's just vaporware.