The mapper RonnieJamesDiner has just released his new masterpiece Tartarus at the Doomworld forums. "The air chokes with the metallic mist of blood. Unimaginable pillars reach above and below to unseen structures of Hell. The Gates of Tartarus tower amidst the haunted vapor -- a Stygian fortress guarding the passage to realms beyond. Abandon hope, all ye who enter here." This map had several sources of inspiration, but the biggest one were the Nether Fortresses in Minecraft (both visually and mechanically). The mapper always wanted to make a Doom map that had the sensation of finding one of these in the Nether, especially with the idea where the environment is as dangerous as the denizens lurking within. That said, there are no teleports if you fall off any of the ledges into the chasm - you are dead! Check it out!