Those few years between 1992-1998 were as .. game-changing .. for games as probably the two decades that followed. We started it with side scrollers, Dune and Doom and ended it with Diablo II, StarCraft and Half-Life.
For the kids here who haven't experienced Half-Life, you should play Black Mesa. For the retro farts who have played Half-Life, you should also play Black Mesa. It's the Half-Life you couldn't have in 1998 because of the slow hardware. I weeped from feels playing it.