How to play
Parallax.

Every turn changes the whole picture.

Follow the beam

Light leaves the source marked S in a straight line. Tap a mirror to turn it. Slash and backslash mirrors reflect in different directions. You can also select mirrors with arrow keys and turn them with Enter.

Think in branches

Later levels introduce splitters, marked with a diamond. They let light continue straight and send a second beam at a right angle. Every receiver must be lit at once.

Find the elegant solution

Complete within the displayed par, without hints or undo, for three stars. There is no time limit. Use Undo or a hint whenever you need a fresh perspective. Assist highlights a mirror that needs turning.

Make it yours

Revisit unlocked stages with the level map. P or Escape pauses. Sound starts off. Your best stars and scores save locally on this browser.