Welcome to the game thats easy for the blind, and near-impossible for the deaf!
The goal of the game is to understand the pattern thats hidden in the grid using your ears. Squares that are part of that hidden pattern play a note whenever the swiping yellow line touches it. You then understand the pattern depending on the pitch you hear for each position of the line. This game is thus blind-friendly.
You could also play if you are deaf, but then things get a LOT harder. Since you cannot hear the notes, you will have to understand the hidden pattern by touching the grid. This sends a jolt of a line, that is paler when near the pattern.