Chaos can be many things. Different things to different people. It can even be wildly different things to the same person. That's why its called Chaos. It's hard to pin down, hard to quantify. It will undoubtedly be different things at different times within the cope of this game.

That said it is to the benefit of all involved to know that that Chaos is, amongst other things, insidious. It is a fact easily forgotten when imagery of fallen Space Marines with rotting flesh for bodies charge across the battlefield at the head of a mutant army - with Chaos sorcerers providing mobile artillery support and daemons fly air missions overhead.

Chaos can be that too - but it is not primarily that. Most of all Chaos is sneaky, insidious, corrupting. And very, very powerful. Like the law of cause and effect - there is no denying the power of entropy, not the utterly and irrevocably corrupting nature of Chaos. So beware - once you start down the path there is no turning back. At best you can hope to slow your fall into the dark abyss.

This has the added benefit of making Chaos potentially very social, very interactive. It's not all bolters, chain-swords, and bloody rituals. It's trying to convince people that freedom, liberty and equality are better than droning for the Corpse-God. Corruption of the mind and spirit - not just bloody mayhem and physical mutation.

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If some of you are tempted to ask meta-questions like 'are the Chaos gods real' or 'is the Emperor truly a god' or 'what happen to the souls of the dead/do people even have souls' - I'm not answering those. If you want to believe in the Powers that's a faith-thing. Just like believing in the Corpse-God. If you want to imagine there are gods out that that answer YOUR prayers, then feel free to believe that. In fact, you're free to believe what you like. It might even be true. You might even make it true by believing. Or not. Maybe your just insane. If there is even a difference between faith and insanity.