Recursive Descent: Vibe Coded Rogue-like in Common Lisp

I was talking with Amit Patel of Red Blob Games the other day and he mentioned that he had been participating in a programming endeavor where people were creating variations of rogue-like games based on a tutorial. He had just begun experimenting with vibe coding and figuring out how to do it and what works for him. This sounded like an interesting idea, so I decided to try it out myself. I began with the basic tutorial, but since I'm a Lisp programmer, I decided to vibe code the game in Common Lisp. I had a few goals in mind: I wanted to see if I (actually the LLM) could code up a rogue-like game in the browser I wanted to see what sort of interesting code the LLM would produce: Would it be a good design? Would it use macros? Would it use CLOS? Would it get overly complex and "hit the wall" at some point? How would it handle being told to work with functional programming style given that this sort of game is traditionally written in stateful, object-encapsulated style? I mostly vibe…