Daedalus: Alien Defense

Daedalus: Alien Defense is a 32-level megawad released in 2003 by TeamTNT as a sequel to Icarus: Alien Vanguard. Originally developed as "Doom 2000", it was the first ZDoom mod created by TeamTNT.

The soundtrack consists of seven original songs written by Rich Nagel.

Levels
The levels are divided in hubs. Each hub features an identical "travel tube" level, which is used as a cutscene for travel between levels. MAP17 is an unnamed fake level, which consists of a single, short corridor between two small octagonal rooms. In addition, there is also an unnamed level in the MAP34 slot, a copy of the MAP17 non-map. As a result, on the 33 levels included in the wad, there are only 27 "real" levels.

Hub 1: Out of the trashcan and into the fire

 * MAP01: Trash Bay by Gary Gosson
 * MAP02: Engineering by Jeromy Visser
 * MAP03: Kitchen by Jani Saksa
 * MAP04: Sleeping Quarters by Don Howard
 * MAP05: Engine Room by Paul Schmitz
 * MAP06: Environmental Control by Rick Clark
 * MAP07: The Bridge by Ty Halderman
 * MAP14: Travel Tube by Paul Schmitz

Hub 2: Gentlebeings, start your engines

 * MAP08: Secondary Bridge by Ty Halderman and Gary Gosson
 * MAP09: Cryonics by Ty Halderman
 * MAP10: Armory by Don Howard
 * MAP11: Brig by Dale Harris
 * MAP12: Storage by Rick Clark
 * MAP15: Travel Tube by Paul Schmitz
 * MAP16: Scout Bay by Andrew Griffiths
 * MAP18: Officers' Quarters by Andrew Griffiths (secret level)
 * MAP19: Disco by Andrew Griffiths (secret level)

Hub 3: Driving Miss Deadly

 * MAP13: Travel Tube by Paul Schmitz
 * MAP21: Landing Site by Jani Saksa
 * MAP22: Tunnels by Gary Gosson
 * MAP23: Warehouse by Rick Clark
 * MAP24: Control Center by Don Howard
 * MAP25: Laboratory by David Nordlund
 * MAP26: Teleport Control by Mattias Johansson

Hub 4: Wo ist der U-bahn, bitte?

 * MAP20: Travel Tube by Paul Schmitz
 * MAP27: Underground Train by Ty Halderman
 * MAP28: Federation Systems Control by Ty Halderman
 * MAP29: Language Labs and Classrooms by Ty Halderman
 * MAP30: Dimensional Shift by Mattias Johansson
 * MAP31: Launch Site by Gary Gosson
 * MAP32: Finale by Ty Halderman

Working title confusion
After John Carmack mentioned the possibility of an id Software product called Doom 2000, and id subsequently registered the doom2000.com domain name, some community members conflated it with this project due to its "Doom 2000" working title, and even fueled speculation that id Software had bought the then-in-progress modification from TeamTNT, as they had earlier done with TNT: Evilution. Ty Halderman was naturally dismissive of the rumors: