Ink is a really interesting/wacky DSL for creating dialogue based branching stories. With my programmer hat on I find some of the PL design choices it makes to be quite spicy (in particular around typing, which is a very odd mix of static but sometimes dynamic with implicit coercions and also some types are also variables??), but it also has enough domain-specific weirdness to make my brain fizz slightly at the novelty.

Oh and it has a couple bits that made me go "wait this is continuation passing style, how did that get into a programming language for non-programmers"

Anyway, I don't think it'll win any PL theory design awards, but I find it charming and kinda neat.

https://www.inklestudios.com/ink/