
- BGG rank
- BGG #6,837
- BGG rating
- 8.1
Stargrave: Science Fiction Wargames in the Ravaged Galaxy
- 2–4 players
- 60–120 min
- Complexity 2.9/5
- 2021

Rules assistance for Warhammer 40,000 (Ninth Edition): Codex – Necrons
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

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Answers come from the official rulebook, with the page to check.
Warhammer 40,000 (Ninth Edition): Codex – Necrons is an expansion for Warhammer 40,000 (Ninth Edition) released in 2020 for 2–6 players, 120–240 minutes per game, and ages 12 and up. Its main mechanics are Variable Player Powers, Dice Rolling, and Measurement Movement.
The Necrons are a deathless race of alien androids, rulers of the galaxy in a long-forgotten era. Now, having slumbered in stasis for millennia, they are rising up to conquer it again. Clad in self-repairing bodies of living metal and wielding weapons that harness the most devastating energies of the cosmos, the Necrons are a terrifying enemy. Fearless, relentless, and utterly without mercy, they advance in serried ranks and lay down withering storms of fire fit to annihilate even the mightiest of foes. The hyper-resilient Necron soldiery are supported by murderous specialist units, techno-sorcerous war machines, mindless Canoptek constructs, and shards of shattered star gods. They are led to war by undying nobles wielding weapons of devastating power, driven by the absolute conviction that they are the rightful rulers of the stars. And if the long sleep has reduced many Necrons to mindless monsters, or ravaged their sanity and transformed them into murderous demigods? Such madness only makes them an even greater and more terrible threat. Codex: Necrons is your essential guide to one of the 41st Millennium's greatest threats – a millennia-old alliance of ancient androids who long ago sacrificed their very essence for greater power. In this book, you'll discover the history of the Necrons, from the very earliest days of the universe, to the War in Heaven, and their awakening, all illustrated with stunning art. Once you've read the lore, you can build your army using a vast suite of rules that bring the Necrons to life, with rules for the dynasties (including ones of your own creation!), datasheets, Stratagems, and much, much more. This 120-page hardback book contains: The history of the Necrons – from their ancient origins to the Era Indomitus Stunning art that brings the lore to life A showcase of incredibly painted miniatures to inspire your own collection and colour schemes Crusade rules that let you develop your Necron army in thrilling narrative campaigns Special abilities and bonuses like Command Protocols for your Necron forces Datasheets for Necrons units for your reference Stratagems, Powers of the C'tan, and more! —description from the publisher
Warhammer 40,000 (Ninth Edition): Codex – Necrons supports 2–6 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Warhammer 40,000 (Ninth Edition): Codex – Necrons is 120–240 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Warhammer 40,000 (Ninth Edition): Codex – Necrons for ages 12 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Warhammer 40,000 (Ninth Edition): Codex – Necrons belongs to these categories: Wargame, Miniatures, and Science Fiction. Its main mechanics are Variable Player Powers, Dice Rolling, and Measurement Movement. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The catalogue lists Warhammer 40,000 (Ninth Edition): Codex – Necrons as an expansion for Warhammer 40,000 (Ninth Edition). Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Warhammer 40,000 (Ninth Edition) to use it. Check that your edition of Warhammer 40,000 (Ninth Edition) is compatible, as some expansions were revised between editions.