VoidHymn is a vertical casual reaction mobile game set against a coastal tide pool backdrop, blending fast-paced tapping with risk assessment. Players must quickly tap the orange starfish that pop up across twelve interwoven tide pool tiles to accumulate points. As the score rises, the target dwell time shortens, refresh frequency increases, and the chance of purple jellyfish appearing gradually grows. Tapping a jellyfish ends the round immediately, while missing a starfish triggers haptic feedback to remind you to stay focused. The game supports pause, restart, and high-score recording. The rules are simple and easy to pick up, yet later stages demand sharper reaction speed and judgment, making it perfect for challenging your limits during short breaks.