Hey, why does it matter if it's made in 'common lisp' ?
(It's probably more interesting than all the "X, a clone of Y but in Rust" posts, at least.)
That was an exclusive playstation title, probably the third biggest title in terms of sales on the playstation, and it was written in Lisp.
All of which makes Kandria even more refreshingly welcome.
The game posted here appears to be written in Common Lisp from the engine up.
It's a bonus that it's written in something a bit more interesting than your average game.