Amazingly awesome!
The game was the most played Half-Life modification in terms of players, according to GameSpy in 2008.[2]
As of August 2011, the Counter-Strike franchise has sold over 25 million units
Counter-Strike is a first-person shooter in which players join either the terrorist team, the counter-terrorist team, or becomes a spectator. Each team attempts to complete their mission objective and/or eliminate the opposing team. Each round starts with the two teams spawning simultaneously.
A player can choose to play as one of four different default character models (four for each side, although Counter-Strike: Condition Zero added two extra models, bringing the total to ten). Players are generally given a few seconds before the round begins (known as "freeze time") to prepare and buy equipment, during which they cannot attack or move. (one notable exception is that a player may receive damage during freeze time. This happens when a map is changed to spawn players at a certain height above the ground, thus causing fall damage to the player. This is a method map designers use to alter the starting "HP" of players on a map). They can return to the buy area within a set amount of time to buy more equipment (some custom maps included neutral "buy zones" that could be used by both teams). Once the round has ended, surviving players retain their equipment for use in the next round; players who were killed begin the next round with the basic default starting equipment.