The Cat in the Hat Builds That is an educational app we worked with PBS and Penguin Random House to create a gaming experience based on science inquiry and engineering process. Built in Cordova, the app features five core games and a backyard home screen that provides kids with a variety of open ended gameplay, including their very own treehouse with over fifty items to decorate it with. A significant portion of the app was based on adaptive gameplay, allowing the games to change their difficulty based on how the player is interacting with the levels. In addition to the adaptive gameplay, we also built in extremely detailed tracking to support a research project conducted by PBS.