1
A target point is shown on the map. It is the antipode of a famous real-world landmark.
2
Click where you think the true antipode is — the point directly opposite through Earth's centre.
3
If you miss, a hint circle appears. The true antipode is somewhere inside it. The circle shrinks the closer you get.
4
You have 4 guesses. Get within 100 km to win and reveal the landmark.
The target is often in the ocean — most land antipodes are water, which is part of the puzzle.