id Software will add a free Slaughter Mode to DOOM: The Dark Ages - Revelations in November. Game director Hugo Martin announced it on the 1 October Slayers Club Live. There is still no day inside the month. It is free for Revelations owners, and it is not in the base game.

A run is endless and single-player. Rounds escalate, and the demons, bosses, and arenas are randomized. The mode keeps a personal best by score and by round reached. id said it has no backend, so there is no global leaderboard.

Every ten rounds is a checkpoint, where you cash in skulls earned on the way there. Cosmetics unlock as you go, and weekly challenges add another score to chase. The stream pitched it as a place to keep using the Revelations combat, Chain Spear included, past a campaign replay or an Ultra Nightmare and Pandemonium run.

The base game already has the Ripatorium, the arena where you pick the demons yourself. Slaughter Mode deals the fight, and the run has no set end.

Source: Slayers Club Live (IGN)