Like it or not. LotFP changed the role-playing game business forever.
Qelong is a setting with the intention of inducing the feeling of horror that is created by the consequences of war on the civilians caught in the middle of a fight between forces greater than themselves. While I suspect there are not a lot of game groups that are interested in having that experience; Ken Hite succeeded in accomplishing the intention. Playing Qelong is a dark experience and not for the faint of heart.