Portal 2 Xbox 360
Extensive single player game featuring next generation gameplay and a wildly-engrossing story. Complete two-person co-operative multiplayer game featuring its own dedicated story, characters, and gameplay. Advanced use of physics allow for the creation of a whole new range of interesting challenges, producing a much larger but not harder game. Original music.
Next generation co-op action gaming from the makers of Half-Life, Portal, Team Fortress and Counter-Strike. AI Director 2.0: Advanced technology dubbed "The AI Director" drove L4D's unique gameplay - customizing enemy population, effects, and music, based upon the players' performance. L4D 2 features "The AI Director 2.0" which expands the Director's ability to customize level layout, world objects, weather, and lighting to reflect different times of day.