Half Life is first of one of the the Great Classic Standards of making a Near Perfect First Person Shooter.
The Graphics were Excellent for their time, the Game play was suberb, tons and tons of re-play value, especially if your wanting to play the other side of the story, "Opposing Force."
I probally sould have written this review a long time ago, but the original Half Life Game has so much to put into words, that it would take an eternity to describe the overall game.
I have to say that this is the Standard for a FPS, still to this day, Halo and Halo 2 are the second standards.