The Gemini rules for Warhammer 40,000 are essentially a set of house rules for Games Workshop’s flagship product.
I think that the author is correct in his premise — that the Rogue Trader rules were perhaps the best.
warhammer
Making OldHammer Box Dioramas
The Santa Cruz Wargamer has a terrific post on making box dioramas from old school Warhammer miniatures. They’ve inspired me to try it myself. I have a lot of Oldhammer miniatures around.
Atmospheric Wargaming Photos
Here’s an impressive set of Flickr photos with atmospheric Warhammer 40K images.
The AD Wars Science Fiction Rules
The AD Wars is a set of free wargames rules that are adaptation of Warhammer Ancient Battles for science fiction games. It’s interesting. You will need a copy of Warhammer Ancients to play, though. But there are a lot of copies of that out there.
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Gangs of Skavenblight
Gangs of Skavenblight is an Warhammer Fantasy adaptation of Footsore Miniatures’ Gangs of Rome Game. It features, as you might imagine, gangs of Skaven fighting for control of the city of the Horned Rat.
All of the links below are to pdf files.