Operation Overlord

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Operation Overlord
Title screen
Author Nigel Rowand
Port GZDoom
Year 2006
Link Doomworld/idgames
Cacoward.png This mod received one of the 2006 Cacowards on Doomworld!
This level occupies the map slot MAP01. For other maps which occupy this slot, see Category:MAP01.
Under construction icon-yellow.svgThis article about a map is a stub. Please help the Doom Wiki by adding to it.

Operation Overlord is a total conversion created by Nigel Rowand (Enjay), released in 2006 for the GZDoom source port. Containing a single level, the TC takes place on a beach full of enemy soldiers as the player is required to advance through enemy lines as part of an amphibious landing operation.

Operation Overlord received one of the 13th Annual Cacowards. A spiritual successor, BGPA Missions: Liberation, would be released two years later, in 2008.


The mod tells the story about a group of UAC marines fighting against a South American movement. The enemies you will encounter are "Incas" or "Incanese" and derived from a private total conversion, called Aspects. Befitting its name, the mod takes place in a D-Day style beach.

Custom content[edit]





Map of Operation Overlord
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


Other points of interest[edit]


  1. In order to get to the area with the minigun turrets, go through the minefield to the platform just before the trench. Jump on its edge, then make a running jump to the block at the west side. From there, jump north to the grass and run to those platforms to get an energy cell pack and a megaarmor. (sector 284)
  2. See Secret #1. (sector 286)
  3. Get out of the trench at the east side, then jump over to the sand at the north end. Take the lift at the right side down and open the door to get a berserk pack. (sector 454)
  4. In the trenches at the west side, make your way into the tunnel at the east end. When you get to two doors, open the one on the right and crouch at the northeast corner to find boxes of Thompson clips. (sector 547)
  5. In the northernmost compound, go to a corridor that has posters and the green door. A bit west of the green door, lower the brown wall to the south to get a berserk pack. (sector 800)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

The records for the map at the Doom Speed Demo Archive are:

Run Time Player Date File Notes
UV speed
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on December 6, 2021.


Map data[edit]

Things 949
Vertices 4453*
Linedefs 5261
Sidedefs 8782
Sectors 844
* The vertex count without the effect of node building is 4453.


This level contains the following numbers of things per skill level:

Technical information[edit]

Inspiration and development[edit]


  • The original release of Operation Overlord relied on a separate, custom executable, called ZDUCK.EXE. This is a source modifcation of ZDoom, coded by Anonone and comes with a custom icon. It builds upon this author's DoomFu source modification, that enabled kung-fu movements in ZDoom. ZDUCK.EXE however implements a ducking feature so that the player can take cover behind obstacles without being shot. ZDUCK.EXE is based on DoomFu2 0.8a and ZDoom version 2.0.63a dated June 24, 2005.

See also[edit]


External links[edit]