Dæmon engine code
From Unvanquished
The game code sources are stored in a Git repository: https://github.com/DaemonEngine/Daemon
The engine code features C++ and C code.
The compiled game code is distributed as native executables, compiled for each supported architectures and systems.
It can be built for some non-officially supported systems like FreeBSD.
To get the sources, see the Getting the source page for details.