with scattered commercial planes, cargo aircraft and helicopters waiting for accurate position alignment. Exquisite HD sky backdrops switch randomly between cloudy, dusk and aurora scenery across different levels. Smooth touch response ensures accurate dragging without stuttering or misoperation. Clear levels to earn in-game treasures, which can be used to unlock special game modes like limited-time speed matching. Designed for fragmented time, each round only takes 1 to 3 minutes to finish. Both children and grown-ups can relax and sharpen their spatial logic during spare time with this fantastic aircraft sorting game.