Pyrogenesis is an open source game engine developed for the real-time strategy game 0 A.D. by Wildfire Games.

Rough table of contents:

1. Introduction
   1. Features
   2. Platforms
   3. License
   4. Comparison and particularities
   5. Where to get it?
2. Overview
   1. Concepts
   2. Components and features
3. View from main() - what happens when you run the pyrogenesis binary?
4. Match setup
5. Simulation
   1. Templates
6. Maps
7. Rendering and shaders
   1. Textures
   2. Materials
   3. Actors
   4. Terrain
8. GUI engine
9. Sound manager
10. Profiler and debugging
    1. Profiler
    2. Debugging server
    3. Logs
    4. User feedback
11. Build system
12. Appendix: 0 A.D.