Python ctypes module for the Irrlicht Engine SDK
3D C++ Game Engine - yet another open source game engine
Data-oriented and data-driven game engine written in Rust
3D playground built on three.js and cannon.js
Cross-platform 2D and 3D game engine
KlayGE is a cross-platform open source game engine
Opensource Game Studio
IGS Labs
Clojure in Unity
Blueshift is a cross-platform 3D game engine implemented in C++
Portable game engine with main focus on point-and-click adventures
Web powered cross-platform 3D, WebXR game engine
3D graphics engine. Little progress; project cancelled.
The Atomic Game Engine is a multi-platform 2D and 3D engine
Open-source, cross-platform, C++ game engine for creating 2D/3D games
A 3D game engine in java.
Turbulenz is a modular 3D and 2D game framework
3D Game Engine
2d/3d Game Engine