When John Romero surprised us with the release of a new Doom level in January, it was like a gift from some shotgun-touting, demon-stomping god. Designed to replace Sandy Peterson's E1M8 – the boss level in the first episode of vanilla Doom – Romero's Tech Gone Bad is more sprawling, and much more difficult, than the original.
More than six months later, Romero has uploaded a walkthrough for the level. In the video, he explains his motives for returning to Doom (a way to ease back into FPS level design), and explains why he wanted to recreate E1M8 in particular (it followed a thread of increasing design complexity he had created earlier in the episode).
Check out the full video here. Fingers crossed Romero gives the same treatment to the new version of E1M4 he released in April.