Half
Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive.
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Half-Life
Carefully crafted for the single player experience, every encounter in Half-Life is a new challenge, nearly every room throws out something you haven't seen before, every sound is a worrying cue something horrible is about to happen. I haven't had so much fun playing a game in years.

—IGN

Environments are completely interactive. Players may turn on the hand dryers…or push open broken doors. Plus, the materials are realistic. Slippery floors are actually slippery. …It's tough to imagine someone who likes video games not absolutely loving this gem.

—The Los Angeles Times