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Warhammer Underworlds expansion Arena Mortis adds a six-player free-for-all mode

Out later this week.

Warhammer Underworlds is getting a new expansion that turns the board game skirmish between warbands from the fantasy miniatures universe into an arena battle between individual fighters.

Arena Mortis is compatible with all of the Warhammer Underworlds games so far - Shadespire, Nightvault and Beastgrave - and allows up to six players to control a single champion on either side of a new double-sided board as they scrap in a free-for-all.

The box comes with 40 additional cards split equally between new gambits and upgrades, which can be used in any Underworlds game and play mode, not just Arena Mortis. There’s also a selection of tokens and updated cards for the Restless Dead gambit and the Sepulchral Warden, reprinted to reflect updates to the rules.

Standard games of Warhammer Underworlds see up to four players building and controlling small bands of models from Warhammer: Age of Sigmar factions, including the Stormcast Eternals, Nighthaunt and Kurnothi. Each faction has unique skills and cards that the players must use to claim objectives and defeat their opponents, moving around the hex-grid map and using attacks and abilities to take the victory.

A number of extra warbands have been released for Warhammer Underworlds since the series’ first title Shadespire was released in 2017, with all of the games able to be combined together for different match-ups. The push-fit miniatures are the same as those in Age of Sigmar, allowing them to be used in the full-fat wargame.

Devised by John Bracken, Arena Mortis was first released as a free rules variant available in Games Workshop magazine White Dwarf last summer.

Its boxed release costs £30 - for that you’ll get the new boards, cards and tokens. Arena Mortis will be released this Saturday, September 26th,

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Matt Jarvis


After starting his career writing about music, films and video games for various places, Matt spent many years as a technology, PC and video game journalist before writing about tabletop games as the editor of Tabletop Gaming magazine. He joined Dicebreaker as editor-in-chief in 2019, and has been trying to convince the rest of the team to play Diplomacy since.