Sigil

Sigil is a freely released 5th episode for Doom released by John Romero in 2019 for the 25th anniversary of Doom. The story is that after killing the Spiderdemon at the end of Episode 4 (Unto the Cruel), you must return to Earth to save it from hellspawn that are causing unimaginable carnage. However Baphomet glitched the final teleporter with his hidden sigil whose eldritch power brings you to even darker shores of Hell. You now fight through this stygian pocket of evil to confront the ultimate harbingers of Satan, then finally return to become Earth’s savior. In summary, rip and tear!