iOS game prototype

I'm looking for a game developer who can make for me a RAW (*) prototype of the game described below: Type: 3d, iOS Game engine: Unity Device orientation: Portrait Controls: A player controls the ball on only one axis (horizontal on the screen) by moving the finger. The ball is moving forward all the time. Gameplay: A player have to move the ball through the round rings (there is only one ring in one line). The rings are generated randomly, infinitively (the distances between next rings are quite small, so that the player's quick reaction is almost always required). As the player progresses, movable rings appear (on a horizontal axis). The player receives points for going over the ring. - Exactly in the middle of each ring there is a point, which touches by the player gives a bonus (raises a bit the speed of the ball and increases the point multiplier: x2, x3, x4, etc.). - If the player does not hit the middle point/bonus, but flies through the ring - he stays at the same level of altitude, loses the point multiplier, but continues playing. - If the player does not hit the ring at all - it falls down and the game ends. (*) I need only a clean prototype of mechanics/gameplay + basic controls (without menus, effects and graphics, background colors, sounds or additional futures like ads integrations, etc.)