THE OPTICS CHALLENGE

Laser Lab.

Puzzle mode: Tap a silver diagonal mirror to rotate it 90°. Use reflections to redirect the laser around barriers.
22 challenges: Levels 1–12 teach reflection. Levels 13–22 introduce sliding rail mirrors, opening shutters, and traveling absorbers. Choose any level, earn up to three stars, and try to finish with fewer moves and no hints.
Moving mirrors: Cyan rail mirrors move automatically. Tap one at its blue docking square to lock it in the beam path. Tap again to unlock; the Pause Motion button can make timing easier. Amber shutters and striped absorbers open or move on their own.
Free Lab: Choose a tool to place mirrors, walls, the laser source, or the receiver. Tap an existing mirror to rotate it. Use Emitter to turn the starting beam.
Controls: Touch, mouse, and keyboard (Tab to select mirrors; Enter/Space to rotate). Color and brightness adjust beam appearance.
Save: Puzzle progress, settings, and your Free Lab are stored locally in this browser when storage is available.

Turn the mirrors. Redirect the beam. Light the receiver. One small physics puzzle at a time.

01 / First ReflectionPoint the light where it belongs

PUZZLE 01 / 22● LASER ACTIVE

TAP MIRRORS TO ROTATERECEIVER: WAITING

★★★

Beam Connected!

You solved the puzzle.

The emitter is live. Rotate a mirror to guide the beam toward the receiver.