Derksen.app

Echo Beam

A laser, mirrors, and your memory — can you guide the beam back home?

Echo Beam icon

Preview & Remember

Study the true beam path during the preview phase. Once the light fades, mirrors vanish and you are left with an empty grid and your memory.

Rebuild the Route

Place and rotate mirrors to rebuild the laser's trajectory. Every round introduces new twists, teleports, and timing pressure.

Adaptive Rounds

Memory rounds challenge recall, while live rounds let you experiment freely. Each level tracks how many mirrors you need to succeed.

How It Works

  1. Preview the board and watch the real beam path.
  2. Mirrors disappear. Place the required mirrors from memory.
  3. Test your shot. Hit the goal to clear the level!
  4. Advance through rounds that blend memory and real-time puzzles.