New gameplay footage of Half-Life 2: Episode Two, Portal, and Team Fortress 2 is shown off in this video that goes behind the scenes at Valve’s development teams.

Valve’s Doug Lombardi today said he ’s delaying Half-Life 2: Episode Two and its included games Team Fortress 2 and Portal till February 2007. Lucky for us new videos from Episode 2, Team Fortress 2 & Portal were shot at the Leipzig Game Conference showfloor.

Valve’s Team Fortress 2, an all-new version of the title that spawned team based multiplayer action games, features the most advanced graphics of any Source-based game released to date. Players choose from a range of unique character classes such as medic, spy, sniper, or engineer and must work together to complete a variety of tactical objectives.

Valve has now revealed that Team Fortress 2 will make up the multiplayer component for its forthcoming Half-Life 2: Episode Two. Along with Valve’s experimental first-person puzzler, Portal, Team Fortress 2 will be a standalone game but essentially free as part of the Episode Two package.

Half-Life 2 will be coming to the Xbox 360 and PS3! But wait, that ’s not all, it will include all extra content released for PC so far and more. The console versions will include: Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Portal, and Team Fortress 2!