Half the time it takes for a radioactive substance to decay.
Extreamly popular game, developed by the company VALVe. Yeah, that's how you spell it. With those capitals and that lower-case e.
The game is extreamly popular, boasting an impressive AI and great graphics (for its time). The mod community made that even better, with one of its best mods, Counter-Strike, being able to go commercial and make a profit. This, in turn, started getting people to think of the OTHER great mods in the mod community, namely Sven Coop, Day of Defeat, and The Specialist are all mods that come to mind.
An element's half life is the period of time it takes for half of the radioactive isotopes to decay. It is ibnot/b/i used to describe the dissapation of something not radioactive(subliminal hintcaffeine for instance /subliminal hint)
The_rest_of_the_word: ... really? *yawn*
Random_Chem_1_teacher: The radioactive half-life of carbon60 is approximately 6000 years.
I need not say more then this;
NO GAME WILL BEAT THE TITLE SAID BELOW!!
Half-Life was named "Best Game of All Time" by PC Gamer magazine in its November, 1999 issue.
The historical importance of the game in video gaming will remain as long as shooters exist. It was the first FPS to not have levels or stages and the first to not introduce you with a weapon at the start (you begin on a tram on your way to work-- an ordinary day gone wrong to say the least). Gamespy awarded Half-Life with the second best game ever made, and PC gamer declared it as the best PC game as of 1999.
"Nothing half-assed about it--this has to be the finest shooter ever crafted. -IGN.com"
"Everything about Half-Life smacks of quality: the storyline, the gameplay, the graphics, the sound effects and last, but not least, the obvious level of committment Sierra and Valve have invested in it. Half-Life is, without doubt, the best PC game I have ever played. Ever. -Yahoo! Games"
2 : a period of usefulness or popularity preceding decline or obsolescence <slang usually has a short half-life>