Noirl Brivl keeps the top and bottom almost black. Everything that matters sits in the mid band. Motes flash, hand you a brightness, then go dark. Only then can you tap. Touch during the flash and the run ends as a false contact. Correct taps pay more when they come sooner. Wrong taps spend memory lives, and two spent lives close it. Later flashes get shorter, the band gets denser, and nearby tiers look more alike, so remembering gets harder. This is less a pure speed contest and more a check on what you think you just saw. Plenty of people start whispering the tier under their breath so they do not lose it—totally normal here.