Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Real Time Strategy game engine supporting early Westwood classics
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open source library for creative expression on the web, desktop, etc.
Gideros Release version
Old-school 2D game engine
SDL based generic 2D game engine
Game engine supporting many 3D/2D formats and graphic effects
A simple cross-platform game engine for creating old-school 2D games
Orx: Portable Game Engine
Reusable code for building video games with Jogamp NEWT
TX Library is a tiny graphics library for Win32 written in C++.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A free 3D game engine to create games and realtimes scenes for Windows
Vivid3D is an open-source 3D engine with powerful 2D UI.
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
A cross platform Lua based game engine
A 2D game engine and level editor
Cross-platform 2D and 3D game engine
CSG for jMonkey
Free and Open Game Programming Language for Windows and GNU/Linux
Example code for creating a 2D platform game in Java.