Board Thread:Warhammer 40k General Discussion/@comment-67.197.44.118-20130216115719/@comment-24.53.172.81-20130406041035

LoyalistWolfy wrote: They were already plotting and fighting when mankind was a monkey in the trees. There is no way that the extinction of mankind would kill the Chaos gods.

Hmmm... I wouldn't be so sure.

It says in a few different places that Khorne only materialized during the Terran Middle Ages:

http://my.jetscreenshot.com/2306/20130406-ueft-275kb

Likewise, Slaanesh materialized only in 30,000 c.e.

In the absence of human or Eldar psychic-echoes in the warp...

The Immaterium might very well revert to being the grey but mostly peaceful realm that it was once was.

At the very least... it COULD spell the end of the four major Chaos gods. There are other Chaos entities, of course. But only the "four" have accrued so much power as to be "gods".