With the recent announcements, I have decided to make the Wattage Tile Engine open source. I hope this can benefit the community in some way. It is a fast engine that supports dynamic lighting, line of site, and changing tiles on the fly. The full feature list can be found in the documentation.
A lot of effort was put into the documentation to make it as clear as possible. It contains complete API docs as well as a quick start and around a dozen sample projects to show different features. Check out the documentation.
There is a demo/test application in the root of the repository (just open it in corona). There are also about a dozen sample projects in the documentation linked from the readme.
@paul.watt - beautiful coding by the way. Easy to read and visually appealing. I once asked @ponywolf if he was an artist because of the way his code looks. I ask you the same question.