Overview: Index: Chaos

Want to delve deep into the secrets of chaos? Come take a look inside the new Index: Chaos!

We’re continuing our coverage of 8th with our next look into the Index books. We’ve already looked inside the Starter Box, the new Rulebook, and Index: Imperium I & II. Now it’s time for some Chaos!

Index: Chaos is a 128 page soft cover book that contains 113 data sheets spread over the 3 factions of Chaos: Heretic Astartes (aka Chaos Space Marines), Chaos Daemons (formerly known as …Chaos Daemons), and Questor Traitoris (aka Traitor/Renegade Knights). Within those three umbrella groups you also have the “sub-factions” like Death Guard, Khorne Daemons, Thousand Sons, etc. It’s a complete book in terms of rules, wargear, abilities, and points.

Basically if you own any “flavor” of Chaos then this is the book you’re going to want to pick up and read so you can play 40k 8th. The layout is pretty much the same as the previous Indexes as well. You’ll get a short lore section for the general faction (like a CSM section) and then you’ll get the datasheets for that faction. Within those, you’ll also get a your special rules, too. On top of that, each of the “big four” traitor legions also has a short background bit, and their special characters and unique unit. For example, for the World Eaters you’ll get rules for Kharn and the Khorne Berzerkers in their section.

The Chaos Daemons follow the same pattern and the Chaos Knights are really just a one-pager with a ton of options. The good news is that every model in the current Chaos line is supported in this book (well if they were from GW – Forge World has their own thing going on). There is also as section for Chaos Bastions which was a nice little bonus at the end.

I don’t really want to get into the rules for all the different Chaos units – that could be an entire series of articles. While this book is pretty light on the lore aspects, it CRAMS the rules in the book, so while it’s “only” 128 pages it feels a lot more dense when you read it. Again, with the datasheet format, each unit has a chunk of rules to read and process for you. And with the “generic” Chaos Marines plus the “big 4” traitors, plus the 4 Chaos God’s Daemons and their special characters…well you get the idea. It’s a LOT to go over.

One thing I do want to address is summoning, specifically Daemon summoning. Yes, it’s in the game. No, it’s not the same as 7th. When playing Matched Play with points, you DO have to set aside points for your summoned units. They function similar to “deepstrike” now (not exactly but we will cover that at a later date). However, if you’re playing with Power Levels or in an Open/Narrative format – they don’t require those points to be set aside. As far as I can tell, they are the only army in the game that has that big of a shift from Matched to Narrative/Open play. For Matched play, I think that it’s a good balancing moving. However, Daemons can be a tad overwhelming if you let the summoning train go off the rails in Narrative/Open play. So keep that in mind when you’re list building for the type of game you’re wanting.

Overall, if you haven’t guessed, this book is a must-buy for any Chaos players out there. For $25, it’s totally worth it. I said this in a previous article, but it’s worth repeating: This book is most likely a stop-gap until the “full” codex comes out for each faction. It’s light on the lore, art and “character” we’ve all come to expect from codexes produced by GW. That said, it is VERY rules heavy – which the point of these Indexes. They are designed to get you up and playing 8th with your current army from day 1. That was a pretty ambitious goal but I think GW has done a great job getting that accomplished. I guess we’ll have to wait to see what the community thinks on June 17th!

Index: Chaos $25

One of five books covering the range of Citadel miniatures used to play games of Warhammer 40,000, Index: Chaos is an essential purchase for those wanting to play games of Warhammer 40,000, packed with updated rules and complete points values for Chaos Space Marines, Chaos Daemons and Renegade Knights armies.

It includes 113 datasheets spread across those armies, with an overview of each. Updated abilities, psychic powers, wargear, weapon profiles and points values allow you to field your collection in games of Warhammer 40,000. There’s also a blank army roster and detachment roster, which you are free to photocopy and use when building a Battle-forged army in Matched Play games.


“And if you gaze long into chaos, chaos also gazes into you…”

Well DUH! Have you seen how many eyeballs a Chaos Spawn has?!

  • SilentPony

    Is it true you can’t just summon new daemons anymore? You have to ‘buy’ them with command points, and then do a more complicated reserve roll to bring them on?

    • mrbleak

      You buy them with army points not command.

      So for example in a 2000 points army you build a 1750 points list. Then throughout the game when you summon you can bring in up to 250 points.

      To summon you roll 3 dice and you can summon things with a power level equal or lower to the roll.
      So say you roll an 11, you could not spend your points on a great Unclean one but could summon a Keeper of secrets or a unit of skull-crushers for example.

      • SilentPony

        So are daemons just non-standard reserves then? Seems like you have a limit to how many you get, and use a more limited roll system to pick and choose. Seems entirely possible to ‘buy’ a Bloodthirster and yet never roll high enough to bring him in.

        • mrbleak

          Daemos work just like any other army for what i´ve seen, you can set them on the table at the beginning but you have those written on your army list.
          Daemons you summon you choose and declare after the roll, you don´t have to have them written down on the list just something like “Summoning points – 250 points”
          Yes, Bloodthirster is highly unlikely to be summoned so just put him on your list and deploy him as normal.

          Summoning isn´t as competitive anymore, just flavory and fluffy. though there is some tactical advantages to summoning (If you just think of summoning small daemons (daemonettes and such) as you have less units to deploy (higher chance f going first) and you can summon what best suits your current situation in the battle.

          • Muninwing

            Summoning isn’t broken/stupid anymore, you mean….

            keep in mind i objected to the “gladius gives you freebie transports” too

            if points are a proper balancing mechanic, then adding more points worth of models to your side is by its very definition an imbalance to the game.

            being able, as some were, to summon units who could then in turn summon other units was… a bad idea.

            they brought it back closer to what it was in 3rd/4th, where there were no freebies.

      • Warboss_Stalin

        So basically, you’re paying for something that may or may not be as good as the points would allowed unless you roll high enough to get what you want….

    • You set aside X points just like in AOS. Then you bring them in by casting the power.

      No more free units in matched play.

  • Knight_of_Infinite_Resignation

    Except its not quite ‘any flavour of Chaos’ as it seems they’ve split Renegades and Heretics off and put them in the Imperial Guard book.

    Has anyone seen those rules and what they are like?

    Also I’m presuming from the description that there is nothing for Alpha Legion, Iron Warriors, World Eaters or Black Legion?

    I miss IA13 and Traitor Legions…😢

    • Whiner. Only scrubs complain about spending money on GW products. Something something never happy. Something something GW loves you. Praise be to GW.

      • Knight_of_Infinite_Resignation

        Something something fanboy something which store do you work in something etc

        • Sparowl

          Something something popular to whine about GW something hip to hate something

          • Knight_of_Infinite_Resignation

            Its people like you etc GW something something apologists something get away with it something Bolt Action Gates of Antares.

          • Sparowl

            Biggest in the industry something something best minis something stop being tryhard something competitive ruins games something

          • Muninwing

            something repeated, something off-topic, latecomer to the conversation, something something everyone can play their own way but i’m still judgmental about people who play “lesser” games or styles

          • kingcobra668

            Holy cow, just make out already.

          • Crevab

            Y’all provide so much material, it’s gonna take them a bit to get through all the jokes.

        • Mat McFarlane

          Well I never need to open BoLS comments section again.

          • Knight_of_Infinite_Resignation

            Yeah just read this over and over 😊

      • kingcobra668

        Your comment doesn’t make any of that not true.

        • My comment doesn’t make any of my comment not true? You know King, I think you poop at parties. I think you go to parties and then poop. 😉

    • Wladimir Feldman

      There is no Renegades and Heretics now (other then Heretic Astartes) and no legions other than DG, WE, TS amd EC. End even this legions are not detailed at all.

      • Knight_of_Infinite_Resignation

        Oh bugg3ry b0ll0cks.

        • Nyyppä

          To be fair the vanilla SM have the same situation.

          • Knight_of_Infinite_Resignation

            That doesn’t make me any happier since I also play Iron Hands!

            So I need to spend £45 on books to play my two armies blandly and temporarily? Followed by more money soon to get a bit more flavour?

            Will have to think hard about whether 8th is worth the effort.

          • backoos

            The gaming community awaits with bated breath on your decision…

          • Knight_of_Infinite_Resignation

            thanks for your interest 🙂

          • Muninwing

            better than baited breath… someone getting desperately hungry while fishing…

          • Iconoc1ast


          • Nyyppä

            Well, we all know that SM are going to get their goodies first so play CSM only before that.

          • Muninwing

            sadly, ethics and legalities aside, this issue is what people use to justify piracy…

          • Knight_of_Infinite_Resignation

            True. GW kind of ask for it with their prices and speed of churn.

          • Ryan Miller

            There should be no “vanilla.” There should be chapter dexes for all first founding chapters and dexes for those chapters that significantly differ from their progenitor.

          • Nyyppä

            There should be also ork clans, chaos legions, tau castes, eldar craftworlds, nid fleets, astra armies, drukhari gangs….and if I forgot something then those too.

            But f those, it’s a crime against humanity that SM did not get something extra, right?

      • Dan

        renegades and heretics are going to be in Imperial Armour: Astra Militarum index. to be announced lateer this month.

        The sample pages on ForgeWorld website are the index pages showing page numbers for Elysians, Krieg, Titans, and Renegades and Heretics.

        • Knight_of_Infinite_Resignation

          I’ve seen those and there is no mention of Ren&Her. Others have told me traitor guard is now in IG book, presumably without mutants, zombies, hounds of Xaphan, enforcers etc.

          • Dan

            This clearly lists mutants, mutant ogryns, and others. Didn’t see any hounds but it may not be all of them…


          • Knight_of_Infinite_Resignation

            Ah thats great news, thank you.

            Goes to show the perils of partial rumours. People were even asking on the Facebook FW page about this list and getting no answers.

            Do you know which book this photo is taken from? Presumably their Chaos 40k index?

          • Knight_of_Infinite_Resignation

            Ah its ok found it, the Imperial Guard FW Index.

            Means though I now need 5 books to play my two armies. Feels like 7th!

    • Vachones

      The indexes are only a stop gap measure. There is no way I’d buy all of them for all my armies. At $25 they are not cheap, but still, I only plan on buying it for armies I plan on playing the next three months or so.

      But they still serve as great reference material. The data sheets probably won’t change, so even when they release the faction specific codexes, it won’t contain everything that is in an index.

    • 301stFeinminsterArmoured

      You mean Word Bearers.

      • Knight_of_Infinite_Resignation

        oh yeah, brain fart. Long day yesterday.

        • 301stFeinminsterArmoured

          Oddly enough, although it’s kind of par for the course, Word Bearers, if your playing them 3.5 style, work with almost no changes, apart from more Daemon unit options.

  • Nyyppä

    So, there’s 4 cults, corresponding daemons and generic CSM. This literally the info load of this review.

  • Admiral Raptor

    Nice to see that this site is still pretending that all of the rules didn’t leak well over a week ago, and that anything at all is a mystery at this point in the game.

    • KingAceNumber1

      They all are. If they acknowledge it at all they can get sued, AFAIK

  • Boondox

    So nothing for Night Lords? Or un-aligned Chaos Daemons for them?

    • Jani Jalassalo

      there are no chapter or legions rules in Index books, those come 1 day in 8th edition chaos legion codex

      • Boondox

        Then who are the “big four traitor legions” referred to in the article? It also mentions World Eaters and Death Guard.

        • 301stFeinminsterArmoured

          Emperor’s Children.

        • Jani Jalassalo

          You may use We,T-sons, death guard. But no chapter or legion rules like we had traitor legions book, like no relentless death guard or no tactical doctrines to ultramarined. Also using like death guard restrict you use havocs, terminators or daemon engines

  • uatu13

    Chaos Marines got a huge boost, while Daemons mostly got boned. I was hoping 8th was going to fix the balance issues that have always plagued 40K, but it’s not looking to be that way.

    • Crevab

      They’ve been using the same writers for years or even decades. You can’t really expect a different result using the same tools

      • Spacefrisian

        Depends how the tools are used. A hammer can be used different ways.

        • 301stFeinminsterArmoured

          As Vulkan said to Kurze: “it’s also a hammer.”

  • Foehammer7977

    Yeah, the benefit of summoning really is the fact that you can choose what you summon during play, so allows a little catering of your list that other armies don’t get after you are of the table.

  • 301stFeinminsterArmoured


    There’s a faction keyword missing from the Summoning rules, so you guys who were running summoning CSM lists might be interested.