- Fix missing portals to Zot on D:27 with restart_after_game after Sprint.
- Fix most large special maps not being generated.
- Fix mad amounts of divine gifts in certain cases.
- Don’t duplicate monsters when exiting the Abyss.
- Fix a lock-up on selecting a random character.
- A number of crash fixes.
- Some documentation amendments.
- Don’t stop butchering on unimportant messages.
- Add a command “show runes” (‘}’) that was documented but not implemented.
As all point releases, 0.9.1 is save-compatible with 0.9.0.