International: May 30 1999
Valve
Sierra Entertainment
Steam
GoldSrc
First-person shooter
Multiplayer
Robin Walker, John Cook
ESRB: M (Mature)
Windows
CD-ROM, download
*Minimum: 500 MHz processor, 96 MB RAM, 16 MB video card, Internet connection*Recommended: 800 MHz processor, 128 MB RAM, 32 MB video card, Internet connection