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John Romero,Watch Sukeban Deka the Movie 2: Counter one of the creators of Doom, announced a special surprise for fans on the 1993 game's 25th anniversary: more Doom.

Sort of, anyway. Romero doesn't own the rights to Doom as a series, and rights-holder Bethesda Softworks already rebooted the series for a modern audience, with great success. But as a fan, Romero has access to the same modding tools as anyone else.

He's putting those tools to work on building out a whole new, nine-level episode as a "megawad," which is basically a collection of fan-made additions and changes (commonly referred to as mods), all packaged together.

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Titled Sigil, the mod's planned Feb. 2019 release is set to bring an additional nine levels to the single-player game, as well nine levels for the online deathmatch mode. The announcement on Romero Games' website describes Sigilas "the spiritual successor to the fourth episode of Doom [that] picks up where the original left off."

One important thing to note: While the Sigilmegawad is free, you will need to own a copy of the original Doomin order to use it.

Romero has a history of continued tinkering with his early creation. In Jan. 2016, he released a new level for the original game, the first one he'd designed in 21 years.

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