Enables Roblox developers to use professional software tools
A simple and easy-to-use library to enjoy videogames programming
Open game and rendering engine packed into a JavaScript framework
Godot is a powerful cross-platform game engine
Desktop/Android/HTML5/iOS Java game development framework
Open source HTML5 game framework that offers WebGL and Canvas
Open source library for N64 development
You can make it - Open Source MMORPG Platform
One framework for creating powerful cross-platform games
Real Time Strategy game engine supporting early Westwood classics
Gideros Release version
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open Source MMORPG Framework
CTFs as you need them
lua dev plugin for unreal engine 4 or 5
ThinkPHP Framework
A game framework written with osu! in mind.
Open source library for creative expression on the web, desktop, etc.
Self-hosted CMS platform based on the Laravel PHP Framework
All-In-One program that combines multiple Fortnite Dev Account tools.
Arianne is an engine to develop multiplayer online games like Stendhal
Examples of procedural geometry for Unity3D C#
PyCAPGE - Python Classic Adventure Point and Click Game Engine
SDL based generic 2D game engine
Game engine supporting many 3D/2D formats and graphic effects