One of the most acclaimed games of this year, Batman: Arkham Asylum, proves its worth in hard cash and sales figure. Eidos, Warner Bros. Interactive Entertainment, and Rocksteady's third-person action adventure with stealth elements managed to rake up almost 2 million units sold in just 2 weeks after its August 25 official release on the PlayStation 3 and Xbox 360.

With the PC version launched last week, the game has sold over 2.5 million copies across the globe. To add to this, it has managed to rank up a world record, as it received the “Most Critically Acclaimed Superhero Game Ever.” title. According to an official press release, the game scored the highest average review score up to date, a 91.97, and Gaz Deaves from Guinness World Records stated that "it has a well deserved place in the Guinness World Records Book."

Last week the 360 and PS3 versions of the Arkham Asylum received a free single player add-on to enhance the Challenge mode. This includes two maps, Totally Insane, for the more fast paced action fans and Nocturnal Hunter for the stalker in all of us. The First map pits the player against endless hordes of criminally insane while the second one tests the player’s abilities to strike unseen from the shadows. A PC version of this new add-on is to be expected somewhere late this year.

The story behind Batman: Arkham Asylum is co-written by Paul Dini, the produce of TV's Batman: The Animated Series, considered to be one of the most successful animated adaptation of the comic book superhero. The game starts as a riot breaks out inside the Arkham Asylum, Gotham's prison for the most dangerous and psychotic criminals. The plot thickens as the mastermind behind the riots is revealed to be the Joker, Batman's arch enemy. If the multimillionaire Bruce Wayne is used to donning the black cape and venturing in to the city, where criminals come to drown it in chaos, only to, time after time, restore order, the game depicts the exact opposite. The evil doers are in their element and Batman is the one that intrudes and must make his way through Gotham's worse of the worse to stop the Joker.