mudlet

Install command: 
brew install --cask mudlet

Name: Mudlet

Multi-User Dungeon client

https://www.mudlet.org/

Cask JSON API: /api/cask/mudlet.json

Cask code: mudlet.rb on GitHub

Current version: 4.18.5

Current version requires: macOS >= 10.13

mudlet is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
mudlet 8
Installs (90 days)
mudlet 26
Installs (365 days)
mudlet 136
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