Basically to write a NES game you first need to learn 6502 assembly language. There is no simple creator like GameMaker, and no higher level languages like c/java. That is generally enough to scare away most people
But if you have good game ideas, if you develop them completely you are far more likely to find an interested programmer/artist/musician. Completely means full screen layouts or screenshots, lots of finished graphics, all game mechanics figured out, if its an RPG you need every map and every bit of text, etc. This will be pages of work, not just a few sentences like "game where people shoot things".