Agree. gr8 FPS and number one game of all time.
I also enjoyed duke nukem 3d around the same sort of time.
Other gr8 old skool classics...
Going way back I liked the beat 'em up on my spectrum 48K TARGET:RENEGADE.
Platform wise also on the Spectrum, Jet Set Willy and Dizzy.
Monkey Island 1 and 2 on the Amiga 500. Xenon and Xenon 2:The Megablast.
Original Tomb Raider an Resident Evil before they were over franchised when the PS1 first came out. Gran Turismo series.
More recently HL2, MOH, MGS4, WOW (Vanilla ahhh... the good old days)