Board Thread:Warhammer 40k General Discussion/@comment-8257990-20130821144250/@comment-7123746-20130824071619

I think Callum pretty much has it right. The Old Ones started tampering with this particular Galaxy and more or less, 'broke' the Immaterium. Maybe an experiment? Could they have been using their creations and alterations in the 40k Galaxy as a test run for some greater project? Maybe they weren't all wiped out or run off as the fluff legends tell it, maybe they just finished their experiment and moved on to a new galaxy to implement what they had learned.

But back to the subject at hand, if this scenario is true- then the roiling, seething, Chaotic, 40k Immaterium is the exception, rather than the rule. And so, sure the warp exists all over the entirety of the Universe... It just isn't the hurricane of energy and psychic potential that this Galaxy is.