Delta Green is by far my favorite tabletop rpg system. It combines the existential dread and squick of the Cthulhu Mythos with the secret government conspiracy of a Tom Clancy novel, but somehow more pessimistic. If you like Conspiracies and Horror, you owe it to yourself to play this system. the value for the price is also phenomenal, considering theres almost 600 pages in all, covering every single thing you could possibly need to know.
[5 of 5 Stars!]