DOOM invades Diablo Immortal with Cyberdemon boss fight

Blizzard has announced a new Diablo Immortal x DOOM: The Dark Ages crossover event called The Slayers Reign, with the limited-time event set to run from April 16 through May 13. Blizzard says the collab will bring DOOM-inspired combat, cosmetics, and rewards into Diablo Immortal, including a reworked event mode, a new Legendary Gem, and familiar transmogs based on DOOM enemies and mounts.

The Slayer's Reign begins

According to Blizzard, The Slayers Reign centers on a limited-time version of Survivor’s Bane called Slayer’s Bane. In this event, players get access to six Slayer-inspired skills pulled from DOOM’s arsenal, with Blizzard highlighting weapons and abilities such as the Shield Saw, Dreadmace, and Super Shotgun. The company says the event is built around aggressive combat and momentum, with skills designed to chain together for heavier damage.

Blizzard also states enemies will appear during the event, including Imps, while the Cyberdemon serves as Slayer’s Bane’s main boss. In the official description, the Cyberdemon is presented as the major showdown for the crossover, with players using their temporary Slayer-themed abilities to bring it down.

New gem, cosmetics, and login rewards are part of the collab

The crossover also adds a new 2-Star Legendary Gem called The Crucible. Blizzard says the gem damages enemies below a set health threshold by triggering Slaughter, with damage increasing as enemy health drops. Enemies killed shortly after that effect grant Slayer’s Rage, which boosts damage and movement speed and can stack.

On the cosmetic side, Blizzard is adding the Sentinel Forged Armory weapon cosmetics, while the Phantom Market: Ruthless Hellwalker set brings DOOM-inspired armor based on the Slayer’s look. The company is also adding Serrat and Cacodemon familiar transmogs for the event.

Blizzard says players who log in and play during the event can earn free rewards, including The Crucible Legendary Gem, Legendary Crests, Crests, Emoji, Set Gear, and Sentinel Forged Armory weapon cosmetics. For a mobile game crossover story, that gives this one a stronger hook than a simple themed skin drop, especially with a full event mode and boss fight attached.

For readers interested in where game visuals are heading behind the scenes, that conversation also stretches well beyond crossover events and content drops. Notebookcheck spoke to veteran artist Mark Linington about Nvidia’s DLSS 5 push and the growing debate over AI-assisted rendering, creative control, and how much of a final image still belongs to the artists who built it.