Cyberix3D
Castle Game Engine
Open 3D Engine
PlayCanvas
WaveEngine
ZGameEditor
Hero Engine
Cafu Engine
React Native Roadmap
NativeBase
Cyberix3DCastle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
NativeBase - Experience the awesomeness of React Native without the pain
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.
PlayCanvas - PlayCanvas is an open-source game engine built on WebGL and WebVR.
WaveEngine - The definitive free cross-platform mobile engine to unleash your games using C#.
ZGameEditor - Create low-code 3D games with procedural graphics and sound that are as small as 64 KiB.