The Tiny JavaScript Game Engine That Can!
Ct.js is a desktop game engine that makes learning programming fun
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Orx: Portable Game Engine
A fork of Chocolate Doom with small Quality of Life enhancements
3D graphics engine. Little progress; project cancelled.
online 4X browser game engine
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Educational framework for OpenGLES, OpenCL and OpenAL
Java Game Engine Project
TurboSphere is an easy to learn and powerful JS based game engine.
A lightweight HTML5 Game Engine