Diablo 4 officially goes over with Doom

Diablo 4 has just announced an official collaboration with Doom: The Dark Ages. This coming Diablo 4 x Downfall crossover will include the game's “most expansive reliquary yet,” according to Blizzard, along with several in-game store items inspired by the frenetic first-person shooter.

This Downfall crossover will happen as part of Diablo 4's 'Season of Slaughter', which begins on March 11, 2026. The 12th season of Diablo 4Season of Slaughter brings another heap of new content to the action RPG, including new unique Bloodied items, the ability to temporarily transform into The Butcher, and a new Killstreak power. Diablo 4 Season 12 also lets players try out the Lord of Hatred expansion Paladin class for free up to level 25.

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Everything included in Diablo 4's Doom: The Dark Ages Crossover

diablo-4-doom-the-dark-ages-game-rant-1 — Diablo 4 Doom Crossover

As of March 11, 2026, Diablo 4 will host one Doom: The Dark Ages crossover. As of this date, all players will have access to one Doom: The Dark Ages Event Reliquary which has a total of 10 rewards. Each of these rewards can be earned for free via the “Dark Ages” currency, which can be obtained by defeating Elite and Champion monsters. These purely cosmetic rewards will provide a handful Diablo 4s weapon a Doom: The Dark Ages makeover, like turning a normal shield into Downfall's Shield Saw, and give a melee weapon the appearance of Downfall's Slayer Flail. Claim all rewards in Diablo 4 x Downfall crossover Event Reliquary will give players the portal Forsaken Gates Town. Killing Lair Bosses in this coming Diablo 4 The crossover also has a chance to release a special Doom Chest that contains existing unique weapons that have been given the appearance of Downfall's Crucible Leaf.

Three Doom: The Dark Ages-inspired emblems will be available to claim for free in the days following Diablo 4 Season 12 is launched. On March 11th at 12:00 PM PT, players can claim the Dark Before Dawn Emblem. On March 13 at the same time, players can grab Grandeur of the Gutted Emblem. And finally, on March 15th, players can get the Rip and Tear Emblem.

Of course, the most significant items in this Diablo 4 x Downfall collaboration is only available in the in-game Shop. From March 12 at 12:00 PM PT, Diablo 4 players will be able to purchase a handful of skins that transform their character and mount. While the Doom Slayer armor skin can be used over all Diablo 4s character classes, the Mecha Dragon Serrat mount skin can only be used with Diablo 4s cat bracket. Downfall fans will also be able to purchase a Cacodemon pet. There has been no official word from Blizzard on the price of these Diablo 4 x Downfall cosmetics.

One of the last great crossovers Diablo 4 host was its Berserk collaborate back in May 2025. While the items included in this crossover were praised for their detail and authenticity, Blizzard came under some fire for the pricing of the cosmetic armor sets. Buy each Diablo 4 x Berserk cosmetics would have set players back around $150, with each class-specific outfit and mount skin costing around $25. If Diablo 4pp Doom: The Dark Ages crossover follows, then fans can expect to pay around $25 for the Doom Slayer outfit and another $25 for the Mecha Dragon Serrat-mounted skins.