Precision Stop

Precision Stop is a pure test of timing. A white marker sweeps back and forth along a bar. Somewhere on the bar is a green zone, and all you have to do is stop the marker while it is inside.

Every success moves the zone to a new place, makes it narrower and speeds the marker up, until the zone is a thin sliver and the marker crosses it in a blink. The read-out underneath shows how wide the zone currently is. You are allowed three misses in total, shown by the three red lights.

Stop the marker inside the green zone to score. Three misses end the game.