REPAER'S PROFILE

well I thought of an idea to make battles. The battles do not come often, but random.
The battles will be some evil sprite that follows you, but you can not see. You would hear a loud whisper before battle. The battles will be different nightmares, instead of just scary monsters it will be disturbing images that take up the screen. Different nightmares will be more effective to different party members. Also I will have to find some very uncomfortable music to play while the battle happens. Right now I am just thinking how I will use combat for this system though.

I was thinking of making an horror themed RPG. One thing I could not wrap my mind around is how to combine the two to make a decent RPG.
I haven't thought of any story yet, because I am thinking of game design first. I would like some ideas like themes, settings, or game play ideas to help me start thinking. I will be using RMVX so keep that in mind while you suggest ideas.
Thanks