Light Route support

For help, bug reports or privacy questions, email sunchaopin@gygscb.cn. Publisher: Chaopin Sun.

How to play

1. Follow the arrow from the light source.
2. Tap round mirrors to rotate them by 90 degrees. Square mirrors marked F stay fixed.
3. Light every diamond target at the same time with the current beam. Targets let light pass; walls stop it.

Undo reverses your last change. Reset restores the current puzzle’s starting positions and can itself be undone during the session. “Explain a turn” offers a hint without moving a mirror. Segment tracing changes only how the beam is displayed, not the win condition.

Puzzles and saves

All eight puzzles are available through “Choose a puzzle”. When every target is lit, use “Next puzzle”; after the final puzzle, you can play again from puzzle 1. There is no timer or move limit.

Only your unfinished board and trace preference are saved. Choosing another puzzle replaces the unfinished board. Completed boards and completion marks are not saved. After completing a puzzle and closing the app, reopening starts at puzzle 1 unless you chose another unfinished puzzle. Undo history is not restored.

Report a problem

Please include your iPhone or iPad model, iOS version, app version, puzzle name and steps to reproduce the issue. A screenshot is optional; remove personal information first. No account or special permission is required to play. The app supports iOS 17 or later.