xonotic

Install command: 
brew install --cask xonotic

Name: Xonotic

Arena-style first person shooter

https://xonotic.org/

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

Cask code: xonotic.rb on GitHub

Current version: 0.8.6

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
xonotic 34
Installs (90 days)
xonotic 82
Installs (365 days)
xonotic 319