Tested with no audio on my end, so this is the muted read only. Start and instructions are clear, the 4-column board reads well, and two minutes is the right length. The problem for a player like me: the late tile is only a very short flash, so at the tighter rows there is effectively no cue I can react to by eye and it turns into a guess. If sound-required is the design, that is honest and fine. If not, a slow visual pulse on the beat, separate from the late hit, would make it playable silent. I cannot judge the audio itself.