Flight Landing

You are the tower on a small island airport, and everything in the sky is your problem. Aircraft arrive from every edge of the screen and none of them know where they are going until you tell them: press one and drag a line to where it should land.

It flies the line you drew. Planes need the runway and always touch down from the arrow end, helicopters need the helipad, and neither will accept the other's landing spot.

A red exclamation mark warns you a few seconds before anything new appears. Aircraft you have not given a route to do not disappear, they circle and wait, and they are just as capable of hitting something as the ones under instruction.

Let any two touch and the shift is over. Land ten to clear the first level; twenty levels later the sky is full and jets, which are fast and turn slowly, are most of what you get.

Consecutive landings without a gap build a streak bonus.