So i'm planning on making a game that takes pokemon as an inspiration, but changes the gameplay almost entirely with a different combat system, different level up system etc. and of course i won't be using actual pokemon, but my own creature designs. I was wondering if i would be able to make money from that product without being at risk of a lawsuit by nintendo, since they do have lots of money and have a reputation of abusing copyright law. I don't believe i could be sued over it, since i won't use any of their pokemon designs or trademarks and i'll be changing almost every game mechanic, but i'd like to make sure i'm not breaking any laws by this.
Also, this is my first forum post here so if this isn't the right place for something like this i'm really sorry