Turn a mirror to bend the light.
No clock. Take your time.
Operator’s manual
Click or tap a silver mirror to turn it. Route the beam from IN through every numbered receiver ◎, then into the diamond OUT.
Dark blocks stop light. Some mirrors are red herrings. Beams can cross, but a closed loop goes nowhere.
Keyboard: Tab selects controls; Enter or Space turns a mirror. Arrow keys move between mirrors. Undo and reset are always free. “Tune one mirror” supplies a hint; assisted records are marked.
Progress and best turn counts stay on this device. Sound is optional. No timer, no penalties for thinking.