As we reported some time ago, the new DLC for Batman: Arkham City becomes available today. Harley Quinn’s Revenge is almost a new game or mini-sequel that directly follows the story played out in Batman: Arkham City. After the fatal events that ended the original game’s story, Harley Quinn is out for vengeance on the bat she blames for taking her love away. The DLC comes free with the game of the year version of Arkham City or runs $9.99 on the PSN and 800 Microsoft Points on the Xbox360. In this DLC, players will now be able to escape the monotony of just playing Batman as the game introduces Robin as a playable character in the main storyline. The game keeps the enemies at about the same level, but does provide new, Quinn themed, skins. So while you may still be fighting basic joker thugs and titan monsters, they will have a more card themed appearance. Yet really, its the incredible new story that makes this DLC so fun and a prime example of what game companies should be doing with Downloadable Content. Robin’s use in the gameplay makes it well worth the money to download if you’re not just buying the entire package new through the game of the year edition. And for those who caught the easter egg of Harley Quinn’s pregnancy test in the original Arkham City game? Well…keep an eye out for a twist of a follow up in this DLC.