Visually, it's superb! The music fits really well, too. A little more contrast for the explanation dialogue text would bring this up even more 🙂

I beat the game, but it didn't require any thinking, I just set a simple red carpet path from the red entrance to the red gate, and the goblins followed that simple route. Knights didn't have a blue route, but they all went straight for their own gate without needing any guidance. I didn't understand how to place blue paths, but it was simple just to set red paths.

After winning that way, I tried without setting a single path, just hit start when the game begins, and the game completes itself without any intervention necessary. If you can fix that, it can be a superb, awesome puzzle game. 

Besides that I loved the idea, visuals and music, it's a really cool game!