Godot ships a complete engine, editor, and export pipeline under the MIT licence, which means no royalties, no revenue thresholds, and no licensing conversation before a project starts.
Its 2D renderer is genuinely first class rather than a layer over the 3D one, and the scene and node model is unusually easy to reason about. GDScript keeps iteration fast, and C# is available for teams who want it.
Decisive facts
- Dedicated 2D engine alongside a full 3D renderer
- GDScript, C#, and a C++ extension interface
- Export to desktop, mobile, console, and web from one project
- Node and scene composition model with live editing while running
- MIT licensed with no royalties at any revenue level