(For those unfamiliar Dark Conspiracy it is a Futuristic Fantasy Horror game based on the T2k rules)
I recently saw one of the online game players I follow play the game
SCP_–_Containment_Breach
The game seemed interesting and is apparently free.
http://www.scpcbgame.com/info.html
What interested me more than the game was the source of the lore behind it.
http://www.scp-wiki.net/
This site has details on well over 2000 supernatural aliens/monsters/horrors many of which would be totally at home in an episode of X-files or Warehouse 13.
The background for the site is that there is a secret organization which protects the world and this the information that they have been able to glean about these entities.
I believe it is sourced as a wiki so there are varying levels of detail and quality, but I have found my self fascinated reading it. It might be hit or miss for a DC game, but I am certain there is something useful in there.