John Romero—co-creator of the classic and influential 1990s first-person shooter Doom—has announced that he will release 18 new levels for the game for its 25th anniversary next year.

Scheduled for a mid-February 2019 release, the free megawad of levels will be called " Sigil ." Romero's website describes it as "the spiritual successor" to the fourth episode of Doom, picking up "where the original left off." It will include nine single-player levels and nine multi-player Deathmatch levels.

You'll have to own a copy of the original Doom to play it, but that's not hard to come by. But if a free download isn't enough for you, Romero is offering two special editions that actually cost money. The "standard edition," which costs $39.99, includes the following:

A beautiful demonic standard-sized "big box" featuring the artwork of Christopher Lovell.

A 16GB 3 1/2-inch floppy disk themed USB that includes the free megawad data and extras.

A 2-disc jewel case that includes the free megawad data and soundtrack by Buckethead.

2 stickers: 1 SIGIL and 1 Romero Games.

But it's the "Beast Box" edition that makes things truly ridiculous. You can see pictures of most of its various components above, but here's the list from Romero's website:

A beautiful demonic over-sized box, inspired by the id Anthology™ box, individually numbered and signed personally by John Romero and featuring the artwork of Christopher Lovell.

A 16GB 3-1/2-inch floppy disk-themed USB that includes the free megawad data and extras.

A 2-disc booklet-styled case that includes the free megawad data and full soundtrack by Buckethead and behind-the-scenes information on the original game and the megawad's development.

A beautiful 8" x 10" art print signed by the illustrator, Christopher Lovell.

A SIGIL-themed coin.

A pewter statue of John Romero's head on a spike.

An XL-sized SIGIL T-shirt.

2 stickers: 1 SIGIL and 1 Romero Games.

That one will set you back $166. The head on a spike is admittedly a nice touch—it's a callback to Doom II that fans will recognize. The Romero Games Ltd. website calls these "fan boxes" and notes that they'll only be available from December 10 through December 24 of this year. Generally, we're not inclined to recommend people pre-order games or over-the-top special edition boxes, but collectors might be interested here.

This is not the first time Romero has released new content for Doom. Back in 2016, he released his first Doom level in 21 years for free. In that same year, he launched a Kickstarter for a new game called Blackroom that never quite went anywhere

Plenty of '90s throwback shooters are out there if you have that itch to scratch—for example, DUSK, which is admittedly more Quake-like, is launching out of Early Access on Steam in sync with Doom's 25th anniversary—which just so happens to be today.

Listing image by Romero Games Ltd.