Half-Life, stylized as HλLF-LIFE, is a science fiction first-person shooter developed and published by Valve. The player takes the perspective of scientist Gordon Freeman. Designed for Microsoft Windows, the game uses a heavily modified version of the Quake engine, called GoldSrc.
n Half-Life, players assume the role of the protagonist, Dr. Gordon Freeman, a recent MIT graduate in theoretical physics, and also a recent employee at Black Mesa. After an experiment that goes horribly awry when an unexpected Resonance Cascade (an apparently completely fictitious occurrence) rips dimensional seams that devastate the facility, Gordon must fight to escape the now alien-infested facility as creatures from another world — known as Xen — subsequently enter in ever-increasing numbers through these dimensional seams.
The game is set during May 200- in a remote area of New Mexico, USA at the Black Mesa Research Facility; a fictional complex that bears many similarities to both the Los Alamos National Laboratory and Area 51.

I see that Half life is released on Linux based computers with WineX ( http://www.winehq.com/ ) to emulate Microsoft DirectX.
It's time to Valve ( http://www.valve.org ) to release a version of half life for Mac !
http://lhl.linuxgames.com/
With MacOS X.1 nobody can say 'Make a game for mac is too difficult'.
No more thing handicap the Mac !
- We have OpenGL !
- We have Unix !
- We have nVidia chips !
There are more Mac than Linux based computers !!!
So,
Please, give us some good PC games on our favorite OS platform !!
Guys, email Valve to ask them to port HL on Mac !!!
With HL on Mac, we'll have Counter-Strike ( http://www.counter-strike.net ) too !!!! and all of the good mods with it !!!
Sorry for my english, i am french.