Prism - Daily Light Puzzle

A new light puzzle every day. Turn the mirrors, light every crystal, keep your streak alive. Two minutes a day, no purchases, plays offline.

A dark box. A single beam of light. A handful of mirrors floating in space.

Turn the mirrors until every crystal is lit.

That is the whole game, and it takes about fifteen seconds to understand. What makes it hard is that the light is one continuous path — move a single mirror and everything downstream of it moves too. You cannot solve Prism one piece at a time.

ONE PUZZLE A DAY Everybody in the world gets the same puzzle on the same day. It arrives at midnight, it takes about two minutes, and when you have solved it you are done. There is no energy bar, no timer pushing you, and nothing asking you to come back in four hours.

GENUINELY THREE-DIMENSIONAL The beam does not stay flat. A mirror bounces it out of its current plane and into another part of the box, so you have to think in three dimensions — and you can rotate the whole box with a finger to see where the light actually went.

A REASON TO COME BACK Solve on consecutive days and your streak grows. Compare your score with everyone else who played today. Share your result as a spoiler-free grid that gives nothing away about the puzzle.

AND WHEN YOU WANT MORE

• The archive holds every past day, more than five hundred puzzles and growing
• Practice mode is endless, at any difficulty, with no streak at stake
• Coins earned by solving unlock themes that repaint the whole scene

BUILT PROPERLY

• No purchases of any kind. Nothing is locked behind money.
• Plays completely offline. The daily puzzle is generated on your device.
• Colour-blind mode that changes shapes and outlines, not just hues — every element is identifiable by silhouette alone.
• Reduce-motion support, and haptics you can turn off.

Monday is gentle. Saturday is not.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/