Get your nail gun primed for Quake 1. The pros could run thru it and miss killing half the monsters in record times (just look it up!). While the campaign was epic, even better was playing it on GameSpy and pwning noobs with quad damage.
We even remember paying by the hour at gaming stores to play this on a network with friends. Rack up them kills because Quake 1 taught the world what a FPS game can and should be.
Quake is still around and in 2018 came out with Quake Champions. The grahpics have smoothed and still makes for a fun run-n-gun game.