Games can take a long time to develop. Triple A games created bymassive companies sell quite a lot of copies if they are popularenough, like Call of Duty or Battlefield. However, they also cost alot as they require large teams to cover main components of thegame such as design, programming, and visuals. Once in a whilehowever, small teams called indie developers can become popularthrough media and sell a large amount of copies as well. This isnot too common as they are often under funded and as such, featuresmay be lacking. Indie games who become popular usually incorporatesa cool new idea fresh and different from triple A titles.Short-answer: You'll need some help and experience to reach thatfirst.