 Left 4 Dead 2
This game looks absolutely amazing. The graphics are astounding and the premise is realistic. Valve, the game's developer, recently released a statement that the game will have a more improve version of the AI director from Left 4 Dead, where as last time the AI bots would control the amount and strength of zombies in different sections of the level, they said in L4D2 the AI director will actually be able to control the zombies and the layout of the map as well. One level involves zombies breaking out of tombs and out of the ground in a large graveyard. Now each time you play the game the graveyard will have a new route from start to finish so its a new experience in every play. This will likely be duplicated by games similar to but not including Assassin's Creed where the player has to navigate through a large city styled map which is only really interesting the first 2-3 plays through. I found this to be ground breaking for single-player parts of games. | 
Linear Mode
