id Software co-founder and Doom level designer and programmer John Romero announced on December 8 that he will live-stream the creation process for one of the levels of his upcoming SIGIL II modification for Doom II, a collection of nine more Romero levels serving as a follow-up to 2019's smash hit and Cacoward runner-up SIGIL. The stream will take place on Romero's Twitch channel on December 10, 2022, at 5:00 PM Eastern time as a celebration of Doom's 29th anniversary. Romero also announced that he is targeting the 30th anniversary for the release of the episode.