A particularly unique Android game just came to the Play Store today called Bounden, where two players each hold their thumb on a short edge of the screen, and have to move the device together so the center area hits targets around a 3D sphere at the right time. These stages were designed in coordination with the Dutch National Ballet, and come complete with high-quality classical music that plays as you dance.
There are six stages all told, plus a bonus level exclusive to Android. There are also tutorials for those that need a little help getting started. Not everybody's going to be comfortable dancing in any environment, nevermind one where your phone is in the mix, but Bounden is without a doubt a unique take on local cooperative gameplay. For those that have the guts to try some ballet, hit the download link above. Bounden is $2.99 and has no in-app purchases.