Go to steam and get Cs: Source. It's got a killer engine and is wicked good fun.

Beware, you with lose large swathes of your life to this game as it, like others, is wicked good.
852741252369 Reviewed by 852741252369 on . COUNTER STRIKE HELP! What are the diffrences? How do i know wich one to buy? wich one do you guys think is the best? Counter-Strike: Source Counter-Strike: Condition Zero SIERRA Half-Life: Counter Strike Counter-Strike 1 Anthology Rating: 5