How to play

Periscope workshop

Fit two mirrors and a light-tight tube so a ray from the hidden scene reaches the viewer.

Play game →

Controls

  1. Fit two mirrors and a light-tight tube so a ray from the hidden scene reaches the viewer. Select and drag parts. Marked outlines show required geometry; the action buttons select tools and test the result. Retry replaces the current material only.

5 levels

Background reading ↗