The scale of this is impressive. I think if you showed me a single puzzle / dungeon though it's something we've seen on par from previous models.

First impressions of the code quality also feel like it needs some serious refactoring, but then again I'm not a game dev:

https://github.com/emollick/zork-underground-empire/blob/cod...

https://github.com/emollick/zork-underground-empire/blob/cod...

Overall impression though yeah it's crazy AI can do this.