Moshe and I worked together to make a guestbook for A MAZE. 2019 in Berlin. Guests wrote messages they would sign which were projected inside of the experience. When a guest would submit their message they'd watch their signed marble fall to the bottom of the marble machine among marbles of others guests, hitting percussive instruments along the way.
Within the app Moshe was responsible for a lot of the level design and art while I developed shaders, scripted audio, serialization and gameplay interactions.
Moshe has some great images and a writeup on his site: https://www.moshelinke.de/home-portfolio/the-marble-guestbook/