Marathon's original soundtrack re-recorded with a hardware synthesizer instead of QuickTime's software synthesizer for a more realistic sound. This is how Alexander Seropian's compositions should sound if played with real instruments.

This map pack was designed for multiplayer carnage fun, but also allows single player walkthrough. A few of the maps use switches and uplink chips to simulate different game types.

This is an absolutely spectacular "Space" landscape replacement for any Marathon Shapes file, in full and living COLOUR! The shot is a colossal sweep of the cosmos, as photographed by NASA.

Handy tutorial if you want to create secret door like in the old Wolfenstein 3D.