https://godotengine.org/ - versatile game engine and editor
For a sample/simple Godot package, see salsa:dodge-the-creeps
Mailing list thread on packaging
Kinds of binary extensions:
GDNative, e.g. Godot SQLite, .so in the .pck
Engine extension, statically or dynamically compiled, e.g. RE Tools
- Mono/C#, requires a mono-enabled build of the engine, with games scripts and engine compiled with compatible Mono versions