Valve will be showing a playable version of zombie survival game, Left 4 Dead.
Will back-up save game and configuration settings to make them accessible on any PC.
A look ahead to Friday's new releases.
EA has no word on selling Portal, Team Fortress 2 and Half-Life: Episode 2 individually in UK shops.
A recount of some early multiplayer gaming in and around Half-Life's bunker. Damn that alarm!