Latest version. Works on Zandronum 1.0 or higher, or GZDoom 1.7.0 or higher. Read the FAQ if you are having any problems.
Recurring Nightmare is a retelling of the original Doom. Revisit an upgraded version of Ultimate Doom levels. You will run through the same levels you played before, but harder, with more enemies, new traps, dynamic lights, true 3D floors, new bosses, new secret areas, and much more.
Levels were upgraded, they have more detail, a bit more realistic and plausible architecture (but still retaining the original abstract layout that made the original Doom levels so great)
One of the strongest new points is the addition of Doom 2 enemies and weapons. Yes, that's right, you will have the Super Shotgun, the Hell Knight, Mancubus... on Ultimate Doom levels!
Maps also now features 8 player start locations to be played on Coop. On some levels, when playing on multiplayer, there will be some secret areas which will require team play to reach them (like a tall ledge that will require one player to crouch next to it, so other player can jump on his back to reach the higher position)
You need both Ultimate Doom and Doom 2 IWADS to play this mod.