Two seconds to see a line.
Can you copy its length?

You get just two seconds to study the line.
Once it disappears, match its length from memory.
Three rounds reveal how accurate your eye is.

1. 01Remember the baseline for 2 seconds · Total of 3 rounds
2. 02Copy length by dragging/slider/keyboard
3. 03Calculated by screen ratio / version invalidated when changing screen size

without registration · Gameplay stays on device · Play on my device