In massive news this week, Facebook game giants Zynga announced a closed beta of their new bingo game, Zynga Bingo.

The bingo game features unique features such as power ups, treasure chests, keys and unlockable content. But hang on… is that actually unique? Not according to Facebook’s most popular bingo game creator, Buffalo Studios.

Buffalo Studios develops the Bingo Blitz game, which was polled as one of the top 10 best games on facebook in 2011. It has over 1 million daily active players who enjoy the unusual bingo experience, with lots of interesting features as mentioned above.

Buffalo Studios claim that Zynga have simply ripped off their entire game, and looking at the letter they’ve put together, it is difficult to disagree with them.

[via VentureBeat]