Recently, I had much fun with playing Vincent Baker's In a Wicked Age. Since I also had a deep-seated ache for playing in the grim dark Old World of Warhammer again, an idea struck me (from behind, gaining a +2 to hit modifier).
So I went through the standard oracles presented for In a Wicked Age, re-sorted them to fit under the Chaos Powers, struck a couple of oracles which did not fit the tone, wrote a couple more to replace them. Lo and behold, I now have a game which has yielded two jolly good Warhammeresque convention games, which I will play-test some more. If you want to join the fray, go knock yourself out:
Please be aware that you will need a copy of the 'In a Wicked Age' rules to use this. Believe me, it's worth the money.