Adventure Time Game Wizard is an app on the Google Play Store. It is used to scan in games that you have created using printable pages on Cartoon Network's website. You can also design levels within the game. The app costs $4.99 USD.
The game features the player designing game levels on a piece of specially printed paper. The player prints the level making design onto a piece of white paper, and then draws the right symbols onto the tiles where they want them to go. Once they do that, the player can scan their design into the game, and even upload it to an online "Arcade" where other users can download it. It is also possible to create levels in-game rather than using the design paper.