Desktop/Android/HTML5/iOS Java game development framework
lua dev plugin for unreal engine 4 or 5
One framework for creating powerful cross-platform games
Unity3D Client And C# Server Framework
Gideros Release version
Open game and rendering engine packed into a JavaScript framework
A game framework written with osu! in mind.
A simple and easy-to-use library to enjoy videogames programming
Self-hosted CMS platform based on the Laravel PHP Framework
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
Amateur 3D Game Engine
Arianne is an engine to develop multiplayer online games like Stendhal
OgreWin3D
Examples of procedural geometry for Unity3D C#
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Molecular viewer and prototyping framework
Vivid3D is an open-source 3D engine with powerful 2D UI.
Updated emulator of Forgotten Realms: Unlimited Adventures
Small lightweight program to customize your keyboard
Java Settlers
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.