Thanks. Also now realizing that picking just 10 is super hard and looking back at my list there’s like 2 strong honorable mentions for every title in my list (some might even be swappable).
Just off the top of my head, a few others I’d rate as A-tier or S-tier all-time-greats in my personal list:
Disco Elysium
Final Fantasy 7
Legend of Zelda: A Link to the Past
Legend of Zelda: Breath of the Wild
Castlevania: Symphony of the Night
Hades
Dishonored
Banjo Kazooie
Doom (2016)
Dead Space
Psychonauts 2 (part 1 is also A-tier)
GTA 5
Case of the Golden Idol
Mass Effect 2
Paradise Killer
Phoenix Wright: Ace Attorney
The Great Ace Attorney Chronicles (both parts are excellent)