retroarch-metal

Install command: 
brew install --cask retroarch-metal

Name: RetroArch

Frontend for emulators, game engines and media players (Metal graphics API)

https://www.retroarch.com/

Cask JSON API: /api/cask/retroarch-metal.json

Cask code: retroarch-metal.rb on GitHub

Current version: 1.21.0

Current version requires: macOS >= 10.13

Conflicts with casks:

retroarch 1.21.0 Frontend for emulators, game engines and media players (OpenGL graphics API) RetroArch

Analytics:

Installs (30 days)
retroarch-metal 74
Installs (90 days)
retroarch-metal 257
Installs (365 days)
retroarch-metal 1,090