We have a treat for all you Xbox Live Arcade fans. We previously announced that Marathon was going to be getting some extra DLC to the marketplace. Well, in a special new feature we are bringing, we are going to be taking an exclusive preview into the new content.

So today we will be showing the map Duality, which will be part of the new DLC. Duality shares its name with the Halo 2 version…

Some extra information from Freeverse - "Duality has changed slightly from Marathon Infinity to the Xbox version. A wall was added to prevent a line of sight issue. Duality was the name of the game Double Aught, a game company made up of Bungie employees. It was never finished."