Lumen: Light & Mirror Puzzle

Lumen is a puzzle of light and music. Tap mirrors to rotate them, guide the coloured beams to the crystals and light them all up. Every photon that touches a piece plays a note: when you solve a level, the board plays the melody of your solution. • 240 levels in 20 constellations: every level is a star to light • Daily challenge: a new puzzle every day, the same for everyone, with a day streak • Mirrors, beam splitters, dichroic mirrors, filters, prisms and walls: one new piece at a time • Colours that add up: red + green = yellow, and all three make white • Three stars when you solve it in the fewest moves • Gallery: every solution becomes a work of light you can listen to again • Hints when you're stuck: they show you the right piece to rotate • Relaxing music and chimes generated on the fly, no rush and no timer • In 10 languages Free, with no purchases. The first two constellations are open; the others unlock for good with a short video, and a video also gives you 3 extra hints. No account and no server: levels, stars and melodies stay on your device.

First public version, with the improvements and fixes found during testing.