I'd say that to the end-user it doesn't matter (which is why it's not mentioned on the linked store page), but to the HN crowd it's interesting because lisp is

I'd say that to the end-user it doesn't matter (which is why it's not mentioned on the linked store page), but to the HN crowd it's interesting because lisp is a nifty hacker topic and seeing someone manage to write a game in it is pretty cool. (It's probably more interesting than all the "X, a clone of Y but in Rust" posts, at least.)