One mystery port. Six guesses. Each wrong landfall reports the range in nautical miles and the bearing to steer.
A new port is set every day at midnight UTC — the same port for every player, worldwide.
After each wrong guess you get the great-circle range in nautical miles and the initial bearing from your guess to the mystery port — the course you would steer to get there. The bar shows how close you are.
Stuck? A hint unlocks on your third guess.