Doom co-creator John Romero has made a new map for the game [engadget.com] after around 21 years:
John Romero [engadget.com] is virtually synonymous with Doom as one of its key developers, but he never made a map for it after 1995. Quake, and eventually his other studios [engadget.com], took over after that. However, he's finally coming home to roost: Romero has released [twitter.com] an add-on map for the original Doom, "Tech Gone Bad," that reimagines the Phobos Anomaly at the end of Episode 1. That's bound to whet your appetite if you're a veteran gamer. He's not only intimately familiar with Doom, he's approaching it with 21 years of additional experience under his belt -- as early reactions attest, this is probably much better than the homebrew maps that you saw two decades ago.
You'll need to brush up on running third-party maps [wikia.com], since Doom hails from the old days of command line modes. However, you might have a good reason to dust off those old skills. Romero describes this as a "warm-up," so don't be shocked if he makes further maps for Doom, Doom II or something else entirely.
Level download [dropbox.com]. ZDoom [zdoom.org], Doom Legacy [sourceforge.net], and other open source ports [lgdb.org] are available.
From the WAD description:
Misc. Author Info: My previous Doom levels were made in 1995 for The Ultimate Doom (e4m2, e4m6), so this is a warm-up.