You hear everyone saying that you have to make an original game in order to be successful.
But what does that even mean? All games are in a way or another a modified idea of some other game. Many of them even have the exact same mechanics, but only a few elements are different: it can be either the overall theme, story line, graphic style, mood and so on. Some games come up with new mechanics, but are still heavily based on everything else that’s on the market already.
What I’m trying to say here is that it’s very difficult (and rare) to come up with a totally new genre altogether. Think about it like this: even game studios that have released a game that is very original and different from everything else, still release other titles that are not that original.