Math Ninja 01/30/2012
$1.99- Math Ninja is a defense strategy game where students defend their treehouse from Cats, Dogs, and the Evil Tomato-san. Waves of enemies attempt to destroy your treehouse. You job is to answer basic math facts in order to earn money to purchase items and upgrades that will help as you progress through the game. An engaging app for the students. Free "Lite" version available.