Gear Relay Lab

Step into Gear Relay Lab, a hands-on construction puzzle where every tooth matters. Drag small, medium, and large gears onto fixed axle sockets, connect the powered motor to the target output, and watch the complete relay come alive.

Work through 24 authored experiments that introduce rotation direction, speed ratios, blocked axles, idler gears, and synchronized outputs. There is no timer or life penalty, so every mechanism can be studied and rebuilt at your own pace.

Complete experiments efficiently, collect Hint Chips, and use a chip when you want one valid placement illuminated. Clear schematic visuals, responsive controls, and distinct research phases make each new transmission easy to read and satisfying to solve.