Hello there!
With just a few days left until Halloween, I thought I’d finally publish this Halloween-themed Virtual Rube Goldberg Animation:
I had started working on this for Halloween 2015, but I had so much other stuff to do, that I only managed to get this free project done right after Halloween 2016. So I had to wait another year.
All movement except for the pumpkin in the beginning is pure physics simulation, making it quite a challenge to arrange everything properly. Sound and music are self-made, too (though the music was strongly inspired by “This is Halloween” from the film “Nightmare before Christmas”).
If you have any questions, please don’t hesitate to ask! 
Happy Halloween!
Edit: Oh, and you can read about some backgrounds on my website: https://triastase.com/project/virtual-rube-goldberg-machine-halloween/
