For camp NaNo this year I've decided to work on fleshing out a story idea that I've had for a couple of months. I thought that the idea sounded pretty original at the time, and have been excited to start giving writing a go. However, I very recently found out that the idea I had has already been done, and that it is considered an international bestselling series. My original premise was "a band of orcs set off on a journey, opposed by both humans and other orcs alike. The story aims to show a fantasy setting from the 'evil' perspective, and in doing so give diversity and development to a typically one-dimensional race." The series I found out about is the Orcs: First Blood series by Stan Nicholls. If you're wondering what the premise of his series is, basically just read my premise again. Finding this out has left me pretty disheartened, and wondering if I should continue writing my story. I'm refraining from reading the Orcs series to compare ideas, partially because I don't want to end up taking more ideas from the author, and partially because I haven't seen many good reviews for it. Should I keep going and hope they are distinct enough for it to be not considered too similar, or should I take the time to rework the initial idea? Minor edit: I've started reading the first book in the series against my better judgement. I should've heeded those low reviews. Part of my now wants to try and write my own story out of spite for this one.