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
Gideros Release version
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Real Time Strategy game engine supporting early Westwood classics
Open Source MMORPG Framework
Open source HTML5 game framework that offers WebGL and Canvas
Fast and lightweight JavaScript game engine built on WebGL and glTF
CTFs as you need them
lua dev plugin for unreal engine 4 or 5
You can make it - Open Source MMORPG Platform
A game framework written with osu! in mind.
ThinkPHP Framework
Self-hosted CMS platform based on the Laravel PHP Framework
Unity3D Client And C# Server Framework
Open source library for creative expression on the web, desktop, etc.
All-In-One program that combines multiple Fortnite Dev Account tools.
Ze Text Adventure game Builder : Create as you play !
Arianne is an engine to develop multiplayer online games like Stendhal
An isometric arcade-style game of skill, puzzles and exploration
Game engine supporting many 3D/2D formats and graphic effects
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Old-school 2D game engine