atc

## Description

ATC is a text-mode Air Traffic Controller game. Aircraft appear periodically
and must be directed to the correct exit gate according to their flight plan.
Aircraft can be given direct commands (e.g. turn left), relative commands
(e.g. turn towards exit #2), or delayed commands (e.g. at beacon #1, turn
left), as well as commands to adjust altitude. As the game progresses, more
planes will enter the control area at a time. The game does not end; the goal
is simply to direct as many planes as possible to their desired exit. As soon
as a mistake is made, the game ends.