It looks very cool, but what is it for? What can you do with this language that’s unique or useful?

The site feels more like an intelligence test or a riddle. “Here are N possible statements and M possible words, figure it out if you can.”

A more developed example is HVM[1] which is also built on interaction nets - this computation model enables for-free parallelization

[1] https://github.com/HigherOrderCO/HVM