Lumen: Daily Light Puzzle

Lumen is a quiet puzzle about light. A lamp shines, a sensor waits in the dark, and between them is an optical bench: place mirrors and lenses anywhere, turn them freely, and bend the beam around the walls until enough of it reaches the sensor.

There is no grid and no fixed set of angles. Every degree counts, and the light you see is the light that is traced: reflection, focus and spread behave the way they do on a real bench.

EVERY DAY
Five scenes, the same for everyone in the world, climbing from easy to insane. Each one has a clock you can feel, and your score is how much light you brought home. Compare with the day's board, and watch how the leader solved it once you have played.

MORE WAYS TO PLAY
• Weekly: one insane bench for the whole week, with decoy pieces in the tray and a single attempt
• Duels: send a link, play the same five scenes, see who brings more light
• Endless: one scene after another, getting harder as you go
• Practice: no clock, no board, just the bench
• Campaign: chapters that teach every piece, from flat mirrors to convex and concave lenses, curved mirrors, prisms, colour and even black holes
• Levels: build your own bench in the editor and share it

MADE TO FEEL RIGHT
• Built for a thumb: drag pieces from the tray, turn them with a dial, feel each degree through haptics
• Works offline; your runs are sent when you are back online
• An optional daily reminder, never on a day you have already played
• Hints when you are stuck, in small steps that never spoil more than you asked for

YOUR DATA
No ads, no analytics, no trackers. An account is optional: sign in with a passkey, Google or Apple only if you want your progress on another device. Lumen asks for no email and no name.

Privacy: https://lumen.techdani.cc/privacy