Flax Engine is an open-source 3D game engine written in C++ and C#, designed for high-quality games. It supports PBR, dynamic lighting, and advanced physics, ideal for AAA-style projects or simulations. Flax targets Windows, macOS, Linux, Android, and iOS, with a visual editor for scene and asset management. Its scripting in C# or visual nodes appeals to diverse skill levels. The community is growing, with documentation and Discord support. Flax’s EULA license is permissive, though less open than MIT. While 2D support is minimal, its focus on modern graphics makes it perfect for indie developers creating 3D titles. Less mature than Godot, Flax’s rapid development ensures cutting-edge features.