Kingsborn is a great game designed by a team of German developers who were good enough to also include the source code of the game so if you feel skilled enough to build something new off this game or add new elements to it, you are welcome to do so.
The game already has ten playable levels which wil ltake you into a three dimensional adventure against different enemies that you will have to defeat in order to advance. There is also a walkthrough included and besides that, you also have access to development documentation which is helpful for other developers.
