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
Open source HTML5 game framework that offers WebGL and Canvas
Real Time Strategy game engine supporting early Westwood classics
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open game and rendering engine packed into a JavaScript framework
One framework for creating powerful cross-platform games
Desktop/Android/HTML5/iOS Java game development framework
Open Source MMORPG Framework
Open source library for N64 development
ThinkPHP Framework
You can make it - Open Source MMORPG Platform
A game framework written with osu! in mind.
CTFs as you need them
Unity3D Client And C# Server Framework
Self-hosted CMS platform based on the Laravel PHP Framework
Open source library for creative expression on the web, desktop, etc.
Gideros Release version
lua dev plugin for unreal engine 4 or 5
All-In-One program that combines multiple Fortnite Dev Account tools.
Arianne is an engine to develop multiplayer online games like Stendhal
Game/Scene Development System
Examples of procedural geometry for Unity3D C#