Doom: The Dark Ages Revelations is getting a free Slaughter Mode update next month

id Software announced Slaughter Mode, a free update coming to the Doom: The Dark Ages Revelations DLC next month. The news dropped during a Slayers Club Live livestream featuring game director Hugo Martin.

Slaughter Mode is described as an endless single-player experience where players fight through escalating demon waves across multiple arenas. The mode rewards players with cosmetics and tracks personal bests by round and score. id Software hasn't pinned down a specific release date beyond "next month."

Doom: The Dark Ages launched earlier this year as the latest entry in id Software's rebooted Doom series, following 2016's Doom and 2020's Doom Eternal. The Revelations DLC expanded the base game's campaign, and Slaughter Mode adds a replayable, score-chasing layer on top of that — the kind of endless horde content that fits naturally into Doom's fast, aggressive combat loop. The studio has had a turbulent year, with layoffs hitting id Software earlier in 2025, which drew public comments from Doom co-founders John Romero and John Carmack. Both the studio and Martin responded to the situation at the time.

No firm date is locked in yet, but the update is confirmed for next month. For anyone who hasn't jumped into The Dark Ages or Revelations yet, this is a solid reason to get started before Slaughter Mode goes live.