Martz came up with the idea for an "uplifting" game during the same Amnesia Fortnight event that spawned Costume Quest and Stacking -- a game that involved "cute, furry little monsters, making music and having fun," as Schafer described it. As work continued on the prototype, which already featured cute Henson-esque monsters like "Marco" (above, the one who isn't Cookie Monster or Elmo), the idea of pursuing the license came up -- and then when Sesame Street and WB made a deal for games, Double Fine saw an opportunity.
The game focuses on the Sesame Street idea of the "Whole Child Curriculum," teaching social and emotional skills as well as healthy living habits. In addition, though, Schafer asserts that it will be funny. He calls Sesame Street a "secret comedy show" and intends to keep the same tone in the game. "They're satirical -- they don't just make bland shows for kids, they make them actually funny," Schafer said. "I think that's important for the kids and especially for the parents who watch them together. We're hoping that this is something parents play with their kids."