ブラックスター -Theater Starless- is a captivating rhythm game available on iPhone. Players engage in a unique storyline set in a show restaurant, 'Theater Starless', where male singers and performers put on entertaining shows. As a special guest, players have backstage access and influence the direction of the dramatic narrative through their support for various characters, known as 'ワルメン'. The game features unpredictable storylines and character dynamics, ensuring an engaging experience as players cheer on their favorites to reach stardom.

The game boasts a diverse cast of characters and original music tracks that enrich the gameplay. Players can immerse themselves in the rhythm-based mechanics to support their chosen performers, enhancing their journey through the underground entertainment scene. With a recommended iOS version of 15 or later and compatible with iPhone 8 and newer models, this free-to-play game offers a blend of storytelling and interactive music that will appeal to fans of the genre.