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