Counter-Strike and Team Fortress Classic , the number one online multiplayer game. The critics agree. Half-Life is easily the most gripping, frightening and intense game experience ever. Featuring an integrated storyline with stunning visual effects and a huge, sprawling environment filled with aliens determined to hunt you down and kill you.
Monsters have a strong instinct for self-preservation.
They will duck, jump, hide behind barriers to avoid gunfire and even retreat if feeling threatened. Plus you can choose from 18 different weapons, ranging from a crowbar to laser guided rockets. This is the next generation of action games. Styles of gameplay include cooperative multiplayer mode and a one-button option for getting into a game, to make it easier to start playing. In Opposing Force, players return to Black Mesa Research Facility to experience an entirely new episode of action.