Godot has three kind of languages integration : - GDScript : included by default - C# : you have to download the Mono version of Godot (and install the Mono S

Godot has three kind of languages integration : - GDScript : included by default - C# : you have to download the Mono version of Godot (and install the Mono SDK) - Any other language (Rust, Python, C++, D, etc...) : using GDNative (- And of course you can also directly modify the engine source code in C++ if you need super low level modifications (like writing your own render engine))