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Sesame Street: Once Upon a Monster Exclusive Trailer

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Today's most special game trailer is brought to you by the letters D and W and the number 1.

The D is for Double Fine Studios, the wildly creative team behind quirky hits like Costume Quest and Stacking. Their next project, however, takes kid-cool to a whole new level: it's Sesame Street: Once Upon a Monster for the Xbox 360 and Kinect. Published by Warner Bros. Interactive (there's the W), it's due out this fall.

The number 1? That's in honor of the game's very first trailer, which we proudly present exclusively on Yahoo! Games:

Details are still a bit scarce, but based on the trailer, it seems that players will control famous monsters like Cookie Monster and Elmo while dancing, flying, partying and adventuring through a monster paradise. And did you catch that Grover cameo? He looks like he plays a mean flower guitar. Awesome.

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