Having found that online slot machines featuring comic-book superheroes draw a huge customer base, CryptoLogic Limited (CRYP: N/A N/A) has signed an agreement to bring a new group of characters to Internet gaming.

The new deal with DC Comics and Warner Brothers Digital Distribution will open a whole new superhero universe to CryptoLogic. Included among DC’s exclusive characters are the two best-known of all comic-book heroes, Batman and Superman.

CryptoLogic expects to have games featuring the new cast by the fourth quater of 2009. Other heroes made available include the Flash, Green Lantern, Wonder Woman, Aquaman, and Green Arrow.

Brian Hadfield, CryptoLogic president and CEO, said, “CryptoLogic leads the way in bringing the world’s biggest entertainment brands to the world’s best Internet casinos, and there are few brands bigger than the DC superheroes. It’s all about doing what we do best: branded games are the fastest-growing part of our business, and we expect these and other games will help drive CryptoLogic’s revenue growth for years to come.”

CryptoLogic’s previous comic-based games came from the Marvel brand, featuring such characters as Spider-Man and the Incredible Hulk. The company’s software for online casinos has drawn fantastic response to previous comic issues.