I really miss some of the companies from that era... Red Storm Entertainment, Tom Clancy's vision, comes to mind. The early Ghost Recon and Rainbow Six games had a dedication to immersion that their modern counterparts totally lack.
Ghost Recon (2001) runs perfectly through proton on my linux desktop. I still fire it up from time to time.
At our local lans in the early 2000s, Rainbow Six Rogue Spear was probably the most popular game we played, and still there doesn't seem to be any tactical shooters like that available today, that focuses on realism over cosmetics and arcade-mechanics.
Also makes me think of the countless hours of fun Westwood Studios provided me with in my youth, real shame they didn't get to survive longer :/