Desktop/Android/HTML5/iOS Java game development framework
Real Time Strategy game engine supporting early Westwood classics
Open source library for creative expression on the web, desktop, etc.
Open source library for N64 development
One framework for creating powerful cross-platform games
Fast and lightweight JavaScript game engine built on WebGL and glTF
Gideros Release version
A simple cross-platform game engine for creating old-school 2D games
SDL based generic 2D game engine
Old-school 2D game engine
Game engine supporting many 3D/2D formats and graphic effects
Reusable code for building video games with Jogamp NEWT
Orx: Portable Game Engine
Arianne is an engine to develop multiplayer online games like Stendhal
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.
Small lightweight program to customize your keyboard
Java Settlers
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
A cross platform Lua based game engine