Open source, clone https://github.com/ouya/ouya-sdk-examples/tree/master/GameMaker
Game Maker - http://yoyogames.com/gamemaker/download
GameMaker Studio Tutorials - http://www.youtube.com/playlist?list=PLUYhFCYb2qeOBR9AVERSimlZEN-dXCoOW
Examples are included at the base GIT path.
Virtual Controller - Maps OUYA controllers to multiple virtual controllers
Game Maker Wiki - http://wiki.yoyogames.com/index.php
Game Maker Studio Setup for Android - http://wiki.yoyogames.com/index.php/GameMaker:Studio_Settings_for_Android
Setting up the ODK - http://gmc.yoyogames.com/index.php?showtopic=570978