Browse free open source Game Development Frameworks and projects for Windows below. Use the toggles on the left to filter open source Game Development Frameworks by OS, license, language, programming language, and project status.
Godot is a powerful cross-platform game engine
A simple and easy-to-use library to enjoy videogames programming
Enables Roblox developers to use professional software tools
Open game and rendering engine packed into a JavaScript framework
Desktop/Android/HTML5/iOS Java game development framework
Fast and lightweight JavaScript game engine built on WebGL and glTF
One framework for creating powerful cross-platform games
Real Time Strategy game engine supporting early Westwood classics
A real-time game development platform
An API for interacting with Starcraft: Brood War (1.16.1)
Open source HTML5 game framework that offers WebGL and Canvas
Arianne is an engine to develop multiplayer online games like Stendhal
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
All-In-One program that combines multiple Fortnite Dev Account tools.
Open source library for creative expression on the web, desktop, etc.
FreeCS is a free-software reimplementation of Counter-Strike 1.5.
This pack add's custom object and rides into your "RCT3 Platinum" game
Open Source MMORPG Framework
CTFs as you need them
Gideros Release version
ThinkPHP Framework
TX Library is a tiny graphics library for Win32 written in C++.