The works is the toy which could be applied on hand-eye coordination training. A ball can roll along a tubular track in a three-dimensional frame through operating a pair of hands grips. The tubular track is spliced together from some assemble components with different conformations. The users can design and assembly their favorite or different complexity paths. The game box contains a timer. The travelling time of the ball moves from the beginning of track to the end can be record. The timing function can be used for self-training evaluation or multiplayer contests. Various parts are removable and could be incorporated into the game box, so it is easy to carry.