Mednafen is a command-line driven emulator for many different systems. It has full support for OpenGL and SDL graphics, network play, remappable input configuration, joystick and keyboard support, save states, game rewinding, GSF playback, and screenshots.

Packages are available for the following releases:
Ubuntu 13.10:
Ubuntu 14.04:
Ubuntu 12.04:
Ubuntu 14.10:
Ubuntu 12.10: 0.9.28-1~getdeb1
Ubuntu 15.10:
Ubuntu 15.04:
Ubuntu 13.04: 0.9.32-1~getdeb1

Package downloads per version:
Version 0.9.28: 10
Version 0.9.32: 68
Version 241
Version 61
Version 1375

Install the application manually with the following command:
sudo apt-get update && sudo apt-get install mednafen

Uninstall the application with the following command:
sudo apt-get remove mednafen