This project is heavily Alpha code. It is proof that Steropes.Tiles is adaptable to other rendering systems but this code here is still quite far from stable.
Steropes.Tiles is licensed under the MIT license.
The Steropes.Tiles Demo module in this Unity project contains graphics from the FreeCiv project. Therefore the source code of this project is dual licensed under the MIT license (that means you can use this code freely in your own projects) and GPL 2.0 licensed (same license as FreeCiv).
All the graphics contained in that module are solely licensed under the GPL 2.0 license to comply with the words, intent and spirit of the FreeCiv project.