Xevon

Falling blocks drawn as glowing neon tubes over a plum-black night sky, with a menu that orbits a ring of light. Input Eight original shapes of two, three or five cells drop onto the board. Shift them sideways, turn them, mirror them and let them fall softly or all at once. A queue shows what comes next, and every full row clears with a flash. Charge Cleared rows fill the Pulse meter. Fire it and the lowest row bursts away, rescuing a crowded board or opening a buried crystal. A circuit lights up only once its row goal is met and every crystal is shattered before the pieces run out. Output Twenty-four circuits sit on a wired map, each scored from one to three stars. Flux is the endless stream, speeding up every ten rows. Duel is a race to twelve rows against five computer rivals, from Volt to Zenith, each faster than the last; clear two or more rows at once to slide filler under the rival's stack. Feedback Energy gathered by playing, two per row, ten per lit circuit and fifteen per duel taken, goes into three upgrades: Wide Lens, Fast Charge and Slow Flux. The Light Quiz asks ten questions on colour and optics from 24 real facts, fifteen seconds each, with a streak counter. Stats keep runs, duels and fourteen badges. Offline, no account, with haptics and the night sky switchable in settings.