Rubik Bubbles is a fun and playful display font that was created using NaN Glyph filters. It's part of a collection of procedurally generated font designs that can be generated within GlyphsApp. The design of Rubik Bubbles is based on the original Rubik font created by Hubert & Fischer, Meir Sadan, and Cyreal.
Rubik-Bubbles is an original design based on the GoogleFont Rubik by Hubert & Fischer, Meir Sadan and Cyreal.
The font is licensed under the SIL Open Font License OFL V1.1. In short, it's free to use and free to modify as you so wish.
https://www.generativefonts.xyz/
https://github.com/NaN-xyz/