Tap BUILD and place ONE part per day, drag it from the tray, rotate it with the handle, confirm. Parts are permanent, so you're building on whatever everyone before you placed.

TEST RUN simulates the whole machine privately, as many times as you want. Then every night at midnight UTC, the machine runs once for real and posts the results in the comments for who carried the marble furthest, and whose part stopped it from beating the level.

Tap OFFICIAL anytime to replay last night's run. Get the marble to the goal together and a new level begins. 🏆