Linux user since 1998, checking in.
Uplink, Neverwinter Nights, and a few other games had native clients circa 2002-3. Wolfenstein and CS worked via opengl and wine. World of Warcraft, doom 1 & 2, StarCraft 1 (I never played 2)
Sometimes it was a pain getting games to work, for sure. And it’s 1000% better than it used to be! But there were lots of games available even back then, if you knew where to look.
Hey man, you try going .5 past light speed and see if you still remember your grade school astrophysics