SpawnPoint

The next, highly-anticipated installment of Valve's Half-Life series. Many major characters will return to Episode Two (including the G-Man), and players will be introduced to a new vehicle. Valve has also made a few improvements to the Source engine, and large scale, destructive events will occur in brilliant, cinematic real-time.

A brief summary of the game's plot:

The Citadel's destruction triggers formation of a massive superportal. To close the portal and prevent the Combine from sending reinforcements, Gordon and Alyx must make sure the data packet they seized in Episode One gets to White Forest, a former missile base where their scientist friends and family have made their stand. It's a breakneck run through an alien-infested wilderness patrolled by Combine troops, marked by encounters with mysterious entities. If they make it on time, they stand a good chance of shutting down the portal. If they fail, then, in the words of Eli Vance, "It'll be the Seven Hour War all over again. But we won't last seven minutes this time."