Contest: Rube Goldberg Machine

This contest has ended. Thank you for all your great entries. Please check out the winners and highlighted entries below!

Welcome to the 26th official Principia Building Contest!

The topic of the week is to create a Rube Goldberg machine! Here's the definition from wikipedia: A Rube Goldberg machine is 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 more complicated and advanced it is - the better. The level should be fun and easy to watch, preferable a custom level with no player robot but some exceptions can be made depending on the level. Use a cam targeter if needed.

You have until next Wednesday (15th October) to submit your entry. The winner receives a Golden Trophy and the runner up gets a Silver Trophy! Good luck!

Tips & Help

Example levels by other players

Real life inspiration

Please see the wiki for help and useful tutorials

Wiki: Tutorials Index


No old levels or derivatives.

How to Submit an Entry

After you have uploaded your level, browse to its level page, choose the correct contest and click "Enter level into contest".



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  • ricardito08: @sdac: I agree
  • dislexicboy: @rom1k: it hasn't said it contest finished under latest news
  • rom1k: @dislexicboy: it has already ended :)
  • dislexicboy: Is this contest going to end
  • wokstation22: @Tesla: @zardOz: congratulations guys! Some awesome works!
  • rom1k: Thank you for all the great entries and congrats to zardOz and Tesla!
  • tanuj: @sdac: When is the contest gonna end?
  • kej1: @TechZ: Thanks!
    Where the end of this contest?
  • sjoerd19992: Entries*
  • sjoerd19992: So many entrys!
  • TechZ2124: I started my entry but my phone is broken :( And my tablet is too slow to be able to build anything. So good luck everybody !
  • benz15: @kej1: ok i try your entry ;)
  • benz15: @Technomancer: but you will not win for any contest you enter like this one of the all contest you enter
  • benz15: @Tesla: i hope you win ;)
  • Golden: @sdac: plus add new beta object that make time go fast, opposite role of time control, i would not wast your time waiting in level :P
  • Golden: Well i am thinking something special, but i wont tell ya what it is because someone will ruin me ;)
  • DirtyMeat: @kej1: I agree. The more complex the machine is the more testings needed.
  • abrackers2: I might try if I can remember how to play
  • sdac: @Tesla: welcome back :)
  • kej1: I'm in! Try my entry :)
  • Majestic Wolve: I try as a noob :-) please Like me to give me a Chance .its football From me
  • Tesla: Am* lol
  • Tesla: I'M IS BACK!! My entry in under construction.
  • sdac: @kej1: compared to real life, Principia is very deterministic ;)
  • kej1: Rube Goldberg machine is very unstable in Principia... I mean all. To do always works machine you need to test, test, test it so much :)
  • Nighthawk: aha! now we are starting to get serious!
  • zardOz2: bout time!
  • kej1: Super!
  • Technomancer: Wow cool idea for a contest. Im in!