MAP04: Megalapolis (Harmony)


Harmony maps
This level occupies the map slot MAP04. For other maps which occupy this slot, see Category:MAP04.

MAP04: Megalapolis is the fourth level of Harmony. It was designed by Thomas van der Velden (t.v.) and uses the music track "Mercury Stripes, Blue Mess" by Kyū. The par time defined in MAPINFO is 5:40.


Map of Megalapolis
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.


  1. Exit to the east, walk past the purple keycard, and down the lift. You should be outside.
  2. Go through the building to the west. It's dark, but will get you around the barricade.
  3. You should be in a circular road, but for now, follow the arrow. You should get into a bowling room.
  4. Exit the bowling facility to the left. You should now be outside the central building with a newly opened door.
  5. Enter this building, and go to the north end of it. Press the switch to open the path to the northern docks.
  6. Head to the northern docks. Note that there will be a centaur on this path, and it is rather dangerous. When you are at the docks, enter the crane and use it to board the boat. Enter the cabin and collect the yellow key.
  7. From the docks is a yellow key door. Enter it, and proceed through the rooms. You may find a door to the west leading to a hockey arena with some ammo. Otherwise, continue south.
  8. In the dark building to the south, take the path west. The stairs circle around in a loop, but will lead outside to the southern part of the map.
  9. In the south section, head east to the large chapel. Climb the spiral structure north of the building, and enter its roof. Flip the switch inside to open a door.
  10. This door allows you to get the purple keycard. Go through the door, climb the ladder to the left, and make a right turn to the car pileup. You should be outside the mutant zoo.
  11. Enter the building on the left. In the left corridor is a switch - press it. Collect the green keycard in the right corridor.
  12. Go to the exit. While it reveals a Phage, you are free to run past it if desired.


  1. At the entrance, climb the crates and collect a grenade launcher. (sector 959)
  2. After walkthrough step 3, you can head behind the bowling area (which may trigger a crusher if you approach head on). On the left is a door that can be opened, and it leads to an entropy thrower. (sector 753)

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 00:47 DrJordo 2017-05-27
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on December 12, 2021.


Player spawns[edit]

This level contains four spawn points:

  1. facing north-east. (thing 358)
  2. facing north-west. (thing 359)
  3. facing south-west. (thing 360)
  4. facing south-east. (thing 361)


Map data[edit]

Things 366
Vertices 9043*
Linedefs 8526
Sidedefs 14174
Sectors 1278
* The vertex count without the effect of node building is 6882.


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

External links[edit]