Counter Strike

Counter-Strike, the world’s number one online action game series, is a first-person shooter developed by Valve Software, the creators of the renowned Half-Life series. This team-oriented online shooter pits terrorists and counter-terrorists against one another in round-based combat set all over the world. Using the power of the “Source” engine, the original Counter-Strike has been completely remade as Counter-Strike: Source—offering upgraded graphics, levels, and the implementation of a new physics engine. Counter-Strike will never be the same!

First released to the public on June 18th, 1999, Counter-Strike began as a simple fan-produced mod for Half-Life. Thanks to a series of steadily-improving beta releases, the mod started to foster a progressively-enlarging and dedicated following. As the fast-paced, tactical game play was refined and improved, and as new concepts and maps were introduced, Counter-Strike moved from being a mere Half-Life mod to an entirely new game.

With the release of Steam, Valve's digital content delivery system, Counter-Strike found a new footing within the gaming community. Counter-Strike’s first single-player chapter, Counter-Strike: Condition Zero (Developed by Valve and Turtle Rock Studios), was a great success, bringing many new features and upgraded graphics to the classic game. The release of Counter-Strike: Source only helped boost the series further towards its now legendary status. Counter-Strike is about as close as you’ll ever get to saving the world; or destroying it!

According to the official site: -- the requirements for Half-Life are
Minimum System Requirements

Windows® 95, Windows 98 or Windows NT 4.0
Pentium® 133
24 MB RAM
2X CD-ROM drive
Mouse and Keyboard
640x480 SVGA high color (16-bit) display
Windows-compatible sound device

Recommended System Requirements

Pentium® 166+
32 MB RAM
3D accelerator card (OpenGL or Direct 3D)

The requirements for Counter-Strike from -- are
System Requirements

Windows© 95/98/NT/2000/ME
Minimum
Intel Penitum® 233 or AMD K6-2
32 MB RAM
400 MB HD Space
2x CD ROM Drive
SVGA, high-color (16-bit)
Win-compatible Soundcard
32-bit Internet service provider with
28.8+ modem or LAN
Preferred
Intel Penitum® 233 or AMD K6-2
48 MB RAM
3D Accelerator card (OpenGL or Direct
3D)