This is an excellent math game. I put together this deck for a blogpost.
As of this upload it is free, grab it =)
http://innertubegames.net/
https://itunes.apple.com/us/app/wuzzit-trouble/id600190128
All of the artwork is from the game, Wuzzit Trouble
©2013 InnerTube Games. I have no rights to these images.