Lenses: Light & Mirror Puzzle

A beam of light, a handful of glass pieces and a room of dark crystals. Lenses is a relaxing light puzzle and logic brain teaser about how light really behaves: reflect, bend and split the beam until every crystal glows.

The first 20 levels are free. After that, each level opens with one short video, or all of them at once with a one-time purchase of the full version.

Drag pieces onto the board, turn them, and watch the light respond in real time. Every beam is traced by a physically based light simulation: white light splits into a rainbow in a prism, a lens gathers it to a focus, a polarizer dims it by the angle between axes, and a diffraction grating throws coloured orders to both sides.

PIECES TO MASTER
• Mirror: reflects the beam at the angle it arrived
• Prism: splits white light into a rainbow
• Lens: gathers light to a focus
• Diverging lens: spreads a beam wide enough to reach several targets
• Polarizer: passes only light vibrating along its axis
• Beam splitter: turns one beam into two
• Diffraction grating: sends rainbows to both sides
• Colour filter: lets only its own colour through
• Concave mirror: reflects light to a focus, with no rainbow edges
• Dichroic mirror: reflects one colour and lets the rest through
• Glass block: shifts a beam aside and guides light inside it like a fibre
• Calcite crystal: splits a beam in two by how its light vibrates
• Fluorescent glass: turns blue light into green or red
• Glass ball: a tiny strong lens that bends light aside into a rainbow fan
• Half-cylinder: sorts colours by angle, red passes while violet reflects
• Sensors and doors: light a sensor to open its doors
• Dark crystal: must stay in shadow

FEATURES
• 100 levels, from first light to puzzles that use every piece together. Levels 1–20 are free; each later level opens with one short ad, or all of them with the full version
• Up to three stars per level: solve it without hints and without spare pieces
• A new daily puzzle every day: keep your streak going
• Coloured crystals only count their own colour, so you have to think about the spectrum
• A hint button that shows exactly where the next piece goes when you are stuck
• A sandbox to experiment with light: the pieces you have met in the levels, or every piece with the full version
• Glowing, smooth light rendering with three graphics settings for any phone
• No account, and levels you have opened play offline
• English and Russian

If you enjoy mirror puzzles, laser and beam puzzles or physics puzzle games, Lenses is made for you. Play offline, at your own pace, and learn how light works along the way.