Not gonna rank them because I can't.
Age of Empires II I've played since release and still do occasionally.
Everhood 1 everything about it I love. During covid things got very dark for me personally and this game just hit perfectly on some stuff plaguing my mind at the exact right time I most needed it. The devs were one hit wonders unfortunately. Coming from that, the sequel was atrocious.
Thief 2: The Metal Age. It's like crack to this brain of mine. Yes I play The Dark Mod too.
Runners up:
LISA: The Painful
Diddy Kong Racing
I adored Disco Elysium while playing it, but the ending felt kinda rushed/soured for me so it didn't quite hit top 3. However, the book Sacred And Terrible Air by Robert Kurvitz that was fan translated to English semi recently helped a great deal with unanswered questions about the world the game takes place in that I had which really helped brighten my overall opinion of the game in retrospect.
The book isn't very approachable I think with almost zero exposition, so it actually helps to have played the game first.