I made a typeface, it's called Flexflex 
I've been working on this project on-and-off for many months. Very happy to finally release it!
Flexflex is a typeface that responds to spatial requirements rather than imposing them. Built on a modular system, each letter can fit inside any given rectangular container and transforms continuously if its ratio changes. In theory, it's infinitely flexible.
For more information and interactive demos, see the website: https://ronikaufman.github.io/flexflex