Sonar Beat is a musical rhythm arcade game with a twist: the notes follow a spiral structure, so the ones you miss will remain and will move forward to your center. If they reach it, you’re dead. You play through a radar interface using your sensor cone to detect enemies approaching the center. Gameplay randomness ensure they won't always appear on the same point every time you play, so be careful. You must destroy each enemy at the precise moment that your sensor gets in contact with it. If you fail, the enemy will come closer by and you will ultimately lose!