How to play

Crank and slider

Set crank radius and connecting-rod length so a piston travels between two safe end stops.

Play game →

Controls

  1. Set crank radius and connecting-rod length so a piston travels between two safe end stops. 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 ↗