I’ve been getting really into Vampire: The Masquerade - Bloodlines and Redemption, old school Runescape, Ragnarok Online, Arcanum, Diablo II, and others lately, and I’m looking for more 90s/early 00s PC games that will run on my new Thinkpad E15 G4 running Arch Linux.
Caesar 3 is a fantastic city builder that will run on just about anything. https://store.steampowered.com/app/517790/Caesar_3/
Augustus is a great remake of the game engine to add some quality of life things to the game and make it run easier on more modern systems