Only the current version so far — new entries appear as the game ships updates.
Quartz Echo Membrane Gameplay:
A quartz membrane sits across the screen while chaotic noise ripples (magenta/purple) and target tones (gold) fall from above.
Swipe left or right to change tension. Keep the needle inside the teal band on the tension meter. In that band, noise is filtered out and pure tones pass through, raising score and combo.
Too much tension cracks and ruptures the membrane. Too little lets noise flood through until leak maxes out. There is no timer and no stage clear — survive, filter cleanly, and chase a high score.
