Nobody mentioned (unless the old eyes are getting lazy) Falcon 3 which morphed into Falcon 4 and ultimately Falcon BMS, which has the single best campaign ever. Falcon 3 I had on a 486 DX2 running at 50MHz, then Falcon 4 came out and was a slideshow forcing me to by my 2nd ever PC. Still running it today and F4 came out 95 or 96 maybe