Mayhem is a GUI launcher for classic first-person shooters such as Doom/Doom 2/Heretic/Hexen. Other games, such as Quake and Quake 2, and Duke Nukem 3D, could be added as the project matures.

The GUI is provided by Gtk2-Perl, and should be runnable on any platform that can host the GTK libraries and Perl scripting language. This would include Windows XP and newer, Mac OS X (via Fink, MacPorts or maybe even Homebrew), and pretty much every flavour of Linux and BSD currently available.