Shogo Ogata

忍者在練習扔手裡劍。 忍者不能扔手裡劍好，所以合作是必要的。 穿過樹林通過點擊屏幕上休息，讓我們爭奪得分與世界各地的忍者。 誰將會成為忍者的1號？忍者在等著你！

This is simple Mental Arithmetic Application leading to Improvement of computation speed and revital

"Gravity Ball" falls by gravity. Let's play the ball defying gravity! You can play easily in one