Desktop/Android/HTML5/iOS Java game development framework
Godot is a powerful cross-platform game engine
Enables Roblox developers to use professional software tools
A simple and easy-to-use library to enjoy videogames programming
Real Time Strategy game engine supporting early Westwood classics
One framework for creating powerful cross-platform games
Open game and rendering engine packed into a JavaScript framework
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open Source MMORPG Framework
Open source HTML5 game framework that offers WebGL and Canvas
Gideros Release version
CTFs as you need them
lua dev plugin for unreal engine 4 or 5
ThinkPHP Framework
Open source library for creative expression on the web, desktop, etc.
A game framework written with osu! in mind.
You can make it - Open Source MMORPG Platform
Self-hosted CMS platform based on the Laravel PHP Framework
Arianne is an engine to develop multiplayer online games like Stendhal
A simple cross-platform game engine for creating old-school 2D games
TX Library is a tiny graphics library for Win32 written in C++.
Old-school 2D game engine
An isometric arcade-style game of skill, puzzles and exploration
JavaScript framework to build game engines, games, emulators and apps
INSTEAD - Simple Text Adventure Interpreter.