In this game planes either enter the screen from the top, bottom, left or right. Navigate them through the gates in the correct direction (as indicated by the direction of the gate arrows) and order (as indicated by the gate number) before then guiding them through the exit gate.
Planes may not cross paths unless they are at different heights. Different coloured planes fly at different heights. Those that are the same colour fly at the same height. There'll be coloured exit gates for planes of that colour to exit through.
Points are awarded for passing planes through the gates in order. Points are deducted for near misses (when aircraft are so close they flash red). The game ends if two aircraft collide.