Download a brand new chapter of Sesame Street: Once Upon a Monster! In this new chapter of gameplay, meet new alien monster friends and use the skills youve learned to help them accomplish their mission! From innovative game developer Double Fine Productions comes a storybook adventure of whimsical discovery and outrageous fun, featuring popular Sesame Street characters and quirky, new monsters! This Controller-free gaming experience is perfect for kids, and fun for the entire family! Drop-in/drop-out co-op gameplay is ideal for parent/child or sibling play. Join the fun!