Rube Goldberg Machine

Hello and welcome to the fifth Principia building contest. Once again, we will be re-running an old contest with the same name, and the theme will be Rube Goldberg machines!

You are likely already familiar with the concept of a Rube Goldberg machine - a contraption, invention, device or apparatus that is deliberately over-engineered or overdone to perform a very simple task in a very complicated fashion, usually including a chain reaction.

The level should be satisfying and easy to watch, and ideally require no interaction from the player with camera movement being automatically handled by a Cam Targeter or similar. However, creative interpretations of the theme that involve some interaction from the player are also welcome!

Rules

Scoring

Once the contest is over, a winner and a runner-up will be decided by the contest judge (ROllerozxa). Both will get their levels featured on the front page as well as awarded a stylish trophy badge on their user page.

Depending on the amount of entries, there may be some other level entries that will be highlighted, for things that are interesting but didn't make it to the top.

Timeframe

The contest was started at 13 April 2026.

The contest will end at 27 April 2026 12:00:00 GMT. Time left:

Entries

Comments

4 months ago binarctq: Ah, nice, I won! I would have wanted to add more stuff and make it actually reliable, but... next time for sure.
4 months ago Galaxium: I forgot to set an alarm 😭