Over a year ago, Amazon Studios expanded its original content lineup and made a big push for kids programming with five pilot episodes. The company even sought help from children's entertainment experts like Angela Santomero, the creator of Blue's Clues, and the Jim Henson Company. Now, three of the studio's five original titles, Tumble Leaf, Annedroids and Creative Galaxy, are premiering exclusively on Prime Instant Video (meaning, you'll a Prime membership to watch them). The first six episodes of each show will debut before summer's end, following their respective launches on May 23rd, July 25th and June 27th. In total, that's only 18 episodes for the entire vacation season. But if your preschooler takes fancy, don't worry -- Amazon says there's more to come.