This category is tagged on any MUD that runs an Aber-derived codebase.
“TerraFirmA is an AberMUD based in the United Kingdom. "TerraFirmA was originally the sister-site...TerraFirmA
“Infinity is a MUD, a text-based online role-playing game, founded in 1993. Infinity is set in a...Infinity (AberMUD)