"Doom's 30th Anniversary Celebrated with Free Sigil II Campaign Release"

John Romero, co-creator of DOOM, has released SIGIL II, an unofficial DOOM campaign for the game's 30th anniversary. The new campaign features nine levels, eight multiplayer arenas, a new OST, and new art. Romero will also be hosting a live Twitch event with fellow co-creator John Carmack to discuss the original game. The release of SIGIL II highlights the enduring popularity of the DOOM franchise, which continues to captivate both longtime fans and newer players.