Ogre Busters Free

[ Important Notice - Control Center ]
The main operation in this app is swiping balls from the bottom of the screen. If your iOS7 device turns on “Settings” —>”Control Center”—>”Access Within Apps”, the Control Center may be unintentionally launched in the middle of the game. In those cases, we recommend turning off “Access Within Apps” before you play this app.

*This problem has been improved in Full version 1.0.1.
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“Which number can divide this ogre’s number? Quick!!”

●Welcome to “Prime Number Island”!
This is an educational game of defeating ogres by throwing Prime Number Balls that can divide the numbers on the ogres.

●Develop division calculation ability by learning the idea of prime numbers
This game will develop division calculation ability by working out which number can be divided by which number quickly.
Because the balls are only prime numbers, player will easily learn the idea of prime numbers - not only 2 or 3, but also 17 or 23.

●Free version feature
Only Level l is activated.
The rare characters will appear if you defeat many ogres.
In Full version, we offer 2 more stage levels and "kawaii" character dictionary.