Queueee

Queueee is a simple game that is designed to improve your reaction time and speed and mental flexibility.

Category	Price	Seller	Device
Games	Free	hamed samadi	iPhone, iPad, iPod

It also augments the ability of decision making and concentration by dragging the player attention to what happens within the game.
You only need to swipe the falling queue of circles to the left or the light. It seems easy but needs to focus on what you are doing, you shouldn't miss any move.