Late last year, we told you that the co-creator of Doom, John Romero was creating a new, unofficial fifth chapter of the revered first-person shooter called Sigil. It's now been delayed.

The original Doom is now 25 years old. Id Software’s classic first-person shooter that rewrote the rulebook on mainstream success and controversy, having forged a path forward for the first-person shooter genre and still being a treasure of demonic proportions. Time to celebrate then, and what better way to do so than with a return to hell via some classic action and a host of newly designed levels from Doom’s co-daddy, John Romero?