They are places where "Z axis" does not exist, only YX reign, the word is unknown 3D, games are simple but should be played, many of them will make us having a good time
This is the full Combat Prototype sourcecode, released under LGPL license. Open it with Visual Studio C# 2010. The sourcecode is partially documented, and requires openTK (Open Toolkit) to run. Feel free to learn from it, use it and build upon it! Open the archive with winrar or 7zip.