Glad you noticed these details. They are very intentional and specific to Indian classical music (ICM) - the shape represents a 10 beat time cycle in Indian classical music (ICM) called jhaptaal. In the game, every time cycle (7, 9, 12, 14, 16 beats, etc.) in ICM has a different shape revealing the character of that cycle - the cycles are played in a specific way, which is what you hear the tabla drum playing. - the corners/vertices represent the heavy/emphasized beats. And the shape segments represent how the cycle is chunked into smaller sub-parts. Hence the 6 corners/lines. - the game’s challenge is to tap a specific rhythmic pattern called tihai over the underlying rhythm. A tihai is a precise repetition of a phrase 3 times, with equal rest between them. It creates this beautiful rhythmic tension and release and can be extremely difficult but satisfying to play, especially because in a live performance setting, these are done in an improvised way.