Hi xyncht, thanks for reporting this to us! I was able to replicate some of the behavior that you're describing. The monsters seemed appropriate to the setting, but the items were generic, which suggests that something went wrong. My guess is that our item prompting is a bit too tailored towards traditional roguelike themes.
I tried a few variations on the prompt, and some of them also had the same issue, but not all of them. In particular, the prompt "Flatland: A Romance of Many Dimensions" or "Flatland: A Romance of Many Dimensions by Edwin Abbot" do not have this issue (although the AI definitely doesn't get the literary reference :) We can take a look tomorrow at the server logs and try to figure out what happened.