Overlord

Overlord is a single-level PWAD for Doom that was released in 1994. It was designed by Todd Smith.

The .zip file contains two separate WAD files, chump.wad and filth.wad, which each contain the same single level.

Secrets

 * 1) The path opened up by the switch behind the yellow door leads to a teleporter. En route is a secret door on the south wall (marked by a different texture) leading to a medikit and a teleporter to a zombieman (not on easy skill), a box of shotgun shells, and a megaarmor. On multiplayer there is also a partial invisibility. (sector 29)
 * 2) South of the blue key corridor is a secret corridor (accessed by a secret door at its west end) leading to a shotgun, a box of shotgun shells, a lost soul. Walking out of the eastern end of this corridor lowers a wall in the room with the teleporter to the red key room, revealing a chaingun, two clips, and two imps (one on easy skill). (sector 90)
 * 3) After going through the door to the exit, try to open the door from the north. Instead a door to the west opens, leading to a corridor containing some monsters and items including a plasma rifle and two energy cell packs. (sector 142)
 * 4) Part-way along the path accessed by #3 is a teleporter which leads to a room with a soul sphere that can be accessed by juumping over some poles. (sector 128)

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

Player spawns
This level contains five spawn points:
 * 1) facing north-east. (thing 118)
 * 2) facing north-east. (thing 119)
 * 3) facing south. (thing 120)
 * 4) facing south. (thing 121)
 * 5) facing south. (thing 122)

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