MAP03: The Islet (Erkattanne)


Erkattäññe maps
This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.

MAP03: The Islet is the third map of Erkattanne. It was designed by Nicolas Monti and uses a rendition of the track "True" by Spandau Ballet, sequenced to MIDI by Nicolas Monti.


Map of The Islet
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.


The level has three keys. Once you take one, beware of several traps that open around the level. Also mind the chaingunners that make the prominent appearance.

Red key

Take the shotgun and open the door in the starting room. In the internal corridor go forward and take the first staircase to the left. Head to the left again until you can exit to the surrounding slime/nukage corridor. Carefully follow this corridor to the left to eventually come to a staircase at the south east that leads down into a dark room. The key is put here. Go slightly right to find a lift and travel up. Preparing to spectre and chaingunner ambushes, take the keycard. The floor will be sunk, so to go out of this room you have to find a switch near the lift you lowered.

Blue key

When back in the slime/nukage corridor, head all the way toward north where you discover an UAC door to the left of you. Go to the stairs at the other end of the room. In the sequent room flip the switch to make the key obtainable. Now, jump down and descend into a room where you can take the keycard.

Yellow key

Go to the internal corridor and the stairs in the west again. This time, open the blue door in this room to the left. First, kill the chaingunners and former sergeants at the balconies atop. Then, press the switch to make the key accessible. To get the key return to the outer slime/nukage corridor and head to the west stairs that were previously not built. Take the keycard and head back to the inner corridor. Open the yellow key bars (north west of the corridor) and descend to the outside. Fight the enemies and go to the exit door. Kill one or two imps and finish.

Other points of interest[edit]


You can find a chaingun in the room right (east) of the start. There are also health bonuses and a stimpack.

Super shotgun

At the south east of the slime/nukage corridor there is a brown door. Behind it is a room with a super shotgun and a chaingunner.


  1. Exit the starting room and head down the steps to the north. As you do, a lift lowers. Run northwest to the bright gray area, then turn east and open the door. Get the computer area map before it rises to get the secret. (sector 198)
  2. From the red key platform, jump due south so you land on some tiny steps, Hug the south wall as you go left, and you will reach the ledge that has a backpack. (sector 125)
  3. In the crate room past the red key door, get on the stack of crates at the east side and enter the passage to hear a lift lower. The lift is the crate behind the large stack to the north of the one you climbed. Get on it and ride it up, then jump east to the teleporter. This teleporter takes you to the cages at the south end, where you can get a plasma gun. (sector 106)
  4. In the crate room past the red key door, get on the stack of crates at the east side and enter the passage to hear a lift lower. The lift is the crate behind the large stack to the north of the one you climbed. Get on it and ride it up, then jump southwest to the gray crate below. You have to land on it, and it can take a few tries. Once you land on it, the north wall opens, leading back to the sewer, as well as another wall to the north. At the top of this path is a soul sphere. (sector 193)
  5. After you get the blue key, a wall east of the fence opens up. Go to the sewer and enter this area, then take the north path. Open the wall at the dead end to find a teleporter. This will take you to an area west of the starting point where a pillar with a blur artifact will lower. (sector 45)
  6. Raise the steps leading to the yellow key platform, then go to that platform. As soon as you do, run southeast through the sewer and shoot at the button in the distance before it closes. Return to the yellow key platform and head south to get a berserk pack. (sector 62)


A multiplayer-only BFG9000 (Thing 233) has no flags set for any of the three difficulty classes, so it does not actually appear in the level.

Areas / screenshots[edit]


Routes and tricks[edit]

Miscellaneous demos[edit]

Style Time Player Date File Notes


Player spawns[edit]

This level contains eight spawn points:

  1. facing north. (thing 225)
  2. facing east. (thing 226)
  3. facing west. (thing 227)
  4. facing south. (thing 228)
  5. facing west. (thing 229)
  6. facing east. (thing 230)
  7. facing north. (thing 231)
  8. facing west. (thing 232)


Map data[edit]

Things 243
Vertices 889*
Linedefs 921
Sidedefs 1304
Sectors 205
* The vertex count without the effect of node building is 704.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]