Rotate the scattered circuit. Connect every light to the golden source, one satisfying turn at a time.
Circuit01
Connected0/25
Turns0
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One source. Every light.Follow the glow
Lumen Loop - How to play
Your goal
Connect every tile to the golden source. A connected wire glows green; disconnected wires stay dark. Every generated circuit has a solution.
How to play
Tap or click any tile to rotate it 90 degrees clockwise, including the source tile.
Wires connect only when the ends on two neighboring tiles point toward each other.
Use Tab to focus a tile and Enter or Space to turn it.
Choose a 4 × 4, 5 × 5, or 6 × 6 circuit. Changing size or selecting Fresh circuit starts a new puzzle.
A calmer kind of puzzle
There is no timer or turn limit. All tiles must light up to win. Your completed-circuit count is saved on this browser when storage is available.
A little extra delight
Sound starts off. Use the speaker chip to enable soft synthesized tones; your choice stays on this browser. Supported phones give a gentle vibration on correct moves. A skippable guide appears on your first visit. Reduced-motion preferences are respected.