GD Script is a game engine script for game development. Godot game engine has GD Script as his main script for making games and applications with the engine. A developer can make 2D or 3D games. You can also make applications based on the control scene. Godot 3.1 is free to download. In this book, we will learn through workable projects. The project will introduce a topic and then explained it. Every project will use a gd script only, and this means you will need only one node and script attached to it.