Super Number Defense

A math lesson fades into sleep. Notebook pages become a war map, and Super Number Defense places an elementary school student against an army of number symbols marching toward a base. Fourteen notebook battles fill the campaign. Defensive towers line the road, and stars from defeated enemy numbers pay for stronger stats or fresh structures.

How to play?

Place towers beside the path before the next wave reaches your base. Spend earned stars in the upgrade screen. Solve a plus-or-minus equation there to raise a tower's damage. Put the numbers in the wrong order, and the stat drops. The arrow in the upper left speeds up the action. A free bonus adds extra resources when funds run low.