Read the faint shape
The bright rim marks the arriving pulse. You can see the next few columns, but not the whole route. Sometimes holding a good line is wiser than chasing a greener one.
a small game of attention
Hushline
A signal is crossing the field. Move one channel at a time and let it pass through the quiet cells. Three loud contacts end the line.
Find the first quiet cell. Arrow keys move you before the pulse arrives.
mint is quiet enough to passpulse 1 / 16coral is loud
up / down or W / S · hold your line with space
Make a clean run
Six quiet contacts complete the crossing. There is no rank: the end state is your trace of where you chose to listen.