billiem Games

Beam Room

Today’s puzzle

How to play

Turn the mirrors so one beam lights both numbered receivers together. There is no timer or attempt limit.

  1. Tap a mirror’s circle to turn it

    The whole circle works, so you do not need to hit the thin mirror line. Each turn switches between / and \.

  2. Follow the reflected beam

    A / mirror sends a right-moving beam upward. A second / sends that upward-moving beam right again.

    12
    Right → up → right. The beam passes through receiver 1 and continues to receiver 2; receivers do not stop or turn it.

  3. Light both at once

    A receiver fills with light when the current beam reaches it. Lighting one, then losing it while lighting the other, is not enough. Both lit on the same route completes the puzzle automatically. Use Undo or Restart to try another route.

A little more

You can also grab inside a mirror’s circle, make a short turn or swipe, then release inside the room. While held, only the mirror previews its turn; release changes the beam. Escape, interrupted contact or release outside the room cancels the turn.

Keyboard: Tab to a mirror, then Enter or Space to turn. Arrow keys move focus between mirrors. Undo reverses a committed change; Restart restores today’s starting mirrors.

A new room arrives at midnight UTC. Your unfinished puzzle stays on this device. Your share counts mirror turns, including turns you later undo or restart.

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Your unfinished puzzle stays on this device.

Archive & results

Choose a past puzzle or revisit a completed account result. Today’s puzzle is free; completed account results stay readable.