Its first game, Bingo Bash, was released in December, and has already attracted 1.8 million monthly active users on Facebook.

Not only are they becoming more popular, considering last months release of Zynga Slingo, a combination of slots and bingo, theres also a chance they could become much more lucrative if the regulatory environment changes.

Back in December, the Justice Department also issued a legal opinion that may open the door to certain kinds of legal online gambling in the US, a new market opportunity that social gaming companies including Zynga are exploring.

It was a game that was quietly launched last June and then picked up momentum in the fall by adding more than 2 million monthly active users (see the chart below with usage data from tracking service AppData).

The company took funding from IGN founder Mark Jung, World Golf Tour chief executive Yu Chiang, former general counsel of Apple and Oracle Dan Cooperman and Doug Bergeron, the chief executive of VeriFone.

While Tandem has been operating as a capital fund since 2007 having funded and worked closely with startups like Play In The City, Playhaven, and Zumodrive its mobile accelerator only launched in July.

With the funding, BitRhymes is planning to localize the game for different markets by making it available in 10 languages.

Its also putting more fuel behind mobile versions of the game after the release of Bingo Bash HD for the iPad.

BitRhymes says that players who use the game on both iOS and Facebook generate three times the revenue of users on a single platform.

Julia Macdonald is a fashion journalist based in Cairns, Australia. Julia has a passion for fashion stories and loves writing about fashion news and fashion opinions that matters most to its audience. Julia spends a lot of time discovering and researching latest fashion industry news stories in order to make sure the latest and greatest stories are brought to you first on Stylerchic.com.