well what to say abt. this game...this is one of the best game i have ever played in my life...!!
so REAL to play...!!
it is a first person shooting game...!!
when u will play this game u will feel like u r playing the game in this WORLD but with other world CREATURES + OBJECTS..!!
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this a HUGE game with lots of INTERESTING STAGES & TASKS...!! i m sure abt. one fact that u will just LOVE this GAME....!!
the CHARACTERS are Greatly DESIGNED, the Graphics is super...!! & the GAME-PLAY + STORY is on the TOP...!!
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so lets talk abt. it's SCORES..!!
GRAPHICS - 9/10
SOUND - 9/10
GAMEPLAY -8/10
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in my opinion.....a MUST PALY GAME...!!

for more info...!!
see these SITES -> http://www.gamespot.com/pc/action/halflife2/index.html + http://en.wikipedia.org/wiki/Half-Life_2