The Lost Episodes of Doom

The Lost Episodes of Doom is a collection of three eight-level episodes for Doom by Chris Klie and Bob Carter. It takes place on the Jovian moons Callisto and Io and Jupiter itself. It was a commercial product and was included on a 3.5" floppy disk that was sold with a 246-page book that details the levels.

Massacre on Callisto
The first episode takes place on Callisto, one of Jupiter's moons. All of the levels in this episode were derived from Chris Klie's earlier episode, and the later version,.


 * E1M1: UAC Spaceport by Chris Klie
 * E1M2: Fusion Power Plant by Chris Klie
 * E1M3: Jovian Deuterium Plant by Chris Klie
 * E1M4: Jupiter Planetary Control Center by Chris Klie
 * E1M5: Weapons Research Center by Chris Klie
 * E1M6: Halls of Injustice by Chris Klie
 * E1M7: Core of Evil by Chris Klie
 * E1M8: Callisto Consecration by Chris Klie

The Killing Fields of Io
The second episode takes place on Io, the most vocanically active body in the Solar System. The first four levels in this episode were derived from CHRISK.WAD, with its E1M9 serving as E2M4.


 * E2M1: Io Anomaly by Chris Klie
 * E2M2: Io Munitions Works by Chris Klie
 * E2M3: Io Toxic Disposal Plant by Chris Klie
 * E2M4: Weapons Testing Facility by Chris Klie
 * E2M5: Io Training Camp by Chris Klie
 * E2M6: Io Military Garrison by Bob Carter
 * E2M7: The Draining Pit by Bob Carter
 * E2M8: Late For Supper by Bob Carter

Hell's Gate - The Red Spot
The final episode takes place at Jupiter's Great Red Spot. Realistically, a person would not be able to survive on Jupiter due to its harsh atmospheric conditions and intense gravity and radiation. E3M6 was previously released by Bob Carter as.


 * E3M1: Jovian Stonehenge by Bob Carter
 * E3M2: Pillar of Peril by Bob Carter
 * E3M3: Subterranean Stoneworks by Bob Carter
 * E3M4: Pools of Despair by Bob Carter
 * E3M5: The Cat-Skinner Box by Bob Carter
 * E3M6: Somber Io Promenade by Bob Carter
 * E3M7: Jovian Killjoy by Bob Carter
 * E3M8: Jovian Déjà Vu Again by Bob Carter

The Ultimate Doom
There is an evident issue during start-up when loading the add-on using The Ultimate Doom and its executable, because the most updated version of the game is not compatible with the v1.666 demos contained in the PWAD. As a result of the incompatibility, The Ultimate Doom will terminate after the title screen with the "Demo is from a different game version!" error message. As a workaround, one can start a game through the menu before the first demo starts or use the command line to load an episode, and as a solution, more tech-savvy users can edit the version number of the demos included in the WAD file.