Xavid

"Support for creating 'unit tests' that run a series of commands and make assertions about the output of some of them."

"When a player types a standard direction in response to a disambiguation question, assume they meant to go that direction, not answer the question."

"Various tweaks to understand additional variations of commands and have cleverer, more specific error messages in common failure cases."

"Provides support for an image-based map with a static background and icons for the player and optionally other things or doors."

"Basic support for sources of liquids and things that can hold a liquid, more minimalist than Liquid Handling by Al Golden."

"Support for getting the matched object when matching a snippet against a pattern and for disabling clarification when a command or snippet is ambiguous."

This extensions loops over all the rooms in your games and tries examining words in the room description to see how the game responds. This is designed to catch words players expect to be able to examine, but cannot due to author oversight.

"Allow certain things in adjacent rooms to be examined."