Best open-source engine tools in 2025

CryEngine

Comprehensive game development engine for immersive experiences.

Genesis

Open-source game engine for rapid game development.

thecela.com

Experience products in immersive 3D and augmented reality.

Polycam

Create detailed 3D models of real-world spaces effortlessly.

Cocos2d-x

Versatile engine for creating immersive 2D and 3D content.