Air traffic controllers keep aircraft a safe distance apart and sequence them on and off the runway. It's part puzzle, part juggling act, and it makes a surprisingly great game.
Separation: keep every aircraft apart by distance and altitude. Sequencing: order the arrivals into a smooth, evenly-spaced stream. Routing: get departures climbing out to their exit point and on their way.
Arrivals are descended and turned onto final to line up with the runway. Departures climb out to a fix at the edge of the airspace, where they're handed to the next controller. Do it well and the sky flows; fall behind and it knots up fast.
Simple controls, endless decisions, and the quiet satisfaction of an orderly sky. FlatoutATC turns the real job into an accessible browser game. No 200-page manual required.