This app is Image Quiz.
The goal of this game is to be activate your brain.
The rule of the game is easy.
Find a area where was changed the image within 15 seconds, and tap it.
It is said that this kind of game is good for humans brain.
When you find the change of the image, it makes the pleasure brain by the concentration.
The pleasure makes young and frash brain.
In the game there are 200 images.