Midnight Signal

Midnight Signal is a calm circuit-rotation puzzle for iPhone and iPad. Turn the wires until every receiver has power and every open end is closed. 24 puzzles grow from small connections to a complete 7-by-7 network. Restore four districts, track your progress, and aim for three stars by completing channels without hints and within the rotation target. • All 24 puzzles included in one purchase • Fully offline, with no ads or subscriptions • No account or login • Undo, reset and one-tile hints • Chinese and English, selected automatically with a manual switch • Native haptic feedback with an off switch Progress stays on this device. Deleting the app removes local saves; cloud synchronization is not included. Code and bilingual writing were made with AI assistance. Gameplay does not call an online AI service.