Hey there! 

My name is Robin and I am developing a game titled: 'Open The Gates!'. I am struggling to figure out what genre my game falls under. Here is the pitch I would give:

'Open The Gates! is a 2D sidescrolling castle siege game where you build castles to defend yourself from the enemy sieges. During the game you gather resources to build a powerful army to destroy the opposing castle.'

The problem I am having is that I am unable to find games similar to mine. I can't imagine this idea is so unique no one has done it before?! Below are a few screenshots and here is a link to my twitter so you can check it out: https://twitter.com/crater_hater.

So if any of you could answer the following question that would be extremely helpful!

1. Name the genre this game belongs in. 
2. Name as many things that are (in your opinion) similar to this game. These can be other games but they can also be movies or novels
3. Describe the art style.

Thank you so much!