LIGHT LESSON 01First light
Turn the emitter, then fire.
Select your emitter on A1.
How light plays
Make one move or quarter turn, then fire. Move a prism, mirror or shield one square up, down, left or right. Emitters turn in place; lanterns stay put.
Mirrors reflect both sides. Prisms reflect on their silver face and shatter on their backs. Shields stop light on their marked front edge; other sides shatter. The beam continues through shattered pieces, even your own.
Strike the other lantern to win. Watch for your own lantern in the preview! An unbroken mirror loop ends the beam safely.
Keyboard: arrows move focus, Enter selects, Q/R turn, F fires, Escape cancels. Touch: select, then tap a glowing neighboring square.