Tech Gone Bad

Tech Gone Bad is a single-level PWAD for DOOM designed by John Romero. Released on January 15, 2016, it is the first map created by Romero in over 21 years; it is also his first non-commercial map. It occupies the E1M8 slot and contains 232 monsters and 10 secrets.

Story
''After exiting the Computer Station you knew the worst was up ahead. You still hadn't reached the place where the demons were coming from. The steel door shuts behind you as you realize you're there; you're at the Phobos Anomaly. Cracks from hell are all over the place as seepage from the portal invades the entire installation. Now it's time to find the portal and stop the demons from coming through. You know UAC had hundreds of scientists working at a high-tech lab somewhere in this area, and the portal must be connected to it somehow. Time to lock and load.''

Development
The map was built with Doom Builder 2 and took Romero several hours over the course of two weeks to finish it. In the map's readme file, Romero called its development "a warm-up."