Pablo Dictter and Tobias Münch have released a project called Hatomo Battles The Yomi Demons, which is an episode of ten singleplayer maps for ZDoom, done in Doom II-style. The levels were created from late 2004-present, and the episode's soundtrack is composed by Damian Lee.
The episode is exclusively available for download at the mappers' websites — big empty space (Pablo) and kotogoto (Tobias). While downloading the episode, you can have a look at some screenshots courtesy Pablo, and peek at Tobias' project page for some interesting trivia.