It modifies the multiplayer aspects of Half-Life to provide the player with an experience that a trained counter-terrorist unit or terrorist unit might have. Players will join either a terrorist or a counter-terrorist force and play in one of the four types of scenarios. These are:

Hostage Rescue, where the counter-terrorists must rescue hostages.



Bomb / Defuse, where terrorists must plant a bomb in a critical area and counter-terrorists must defuse the bomb.

Escape, where the terrorists must escape from the counter-terrorists.
Assassination, Where the VIP must be escorted by the counter-terrorists to an escape point.

Weapons and other pieces of equipment are available at a cost, and players can earn money in a variety of different ways while playing the game. Players may also lose money for inappropriate actions. E.g. killing a hostage or a teammate.

Requirements: No special requirements