Halo 3: ODST is a prequel campaign to its best-selling shooter, which focuses on an Orbital Drop Shock Trooper trapped behind enemy lines in New Mombasa.

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Batman: Arkham Asylum exposes players to a unique, dark and atmospheric adventure that takes them to the depths of Arkham Asylum – Gotham’s psychiatric hospital for the criminally insane. Gamers will move in the shadows, instigate fear amongst their enemies and confront The Joker and Gotham City’s most notorious villains who have taken over the asylum. Using a wide range of Batman’s gadgets and abilities, players will become the invisible predator and attempt to foil The Joker’s demented scheme.

The Joker, Batman’s nemesis, has instigated an elaborate plot from within Arkham Asylum where many of Batman’s other villains have been incarcerated. Batman investigates and comes to learn that the Joker is trying to create an army of Bane-like creatures that threaten Gotham City, and is forced to put a stop to the Joker’s plans.

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