Half Life 2 Holiday Collection DVD (Half Life 1, Half Life2, Half Life 2 Episode 1, Counter Strike: Source) - PC Half-Life - Source is a digitally remastered version of the critically acclaimed and best selling PC game -- enhanced via Source technology to include physics simulation, enhanced effects, and more. Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life 2 takes the suspense, challenge and visceral charge of the original, and adding startling new realism and responsiveness, Half-Life 2 opens the door to a world where the player's presence affects everything around him, from the physical environment to the behaviors - even the emotions - of both friends and enemies. In Half-Life 2 - Episode One Freeman reconnects with Alyx Vance and her robot, Dog, as they continue their support of the resistance's battle against the Combine forces. The intense, real-time gameplay delivered in Half-Life 2 - Episode One is made possible only by Source, Valve's proprietary engine technology which has been enhanced with new rendering technology and advanced artificial intelligence to deliver new levels of graphics and character interaction. Counter-Strike - Source blends single elimination, team-based gameplay with an online action experience of incredible depth and realism. Counter-Strike is the most played multi-player online action game in the world. With Counter-Strike - Source, the now legendary game has been given a complete overhaul, with graphic enhancements such as higher polygon models, shadows and reflective water to add dimension to the new characters, items, and environments. CS - Source also contains all new maps