Godot Engine – Multi-platform 2D and 3D game engine

Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.…

One framework for creating powerful cross-platform games.

🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

Cocos simplifies game creation and distribution with Cocos Creator, a free, open-source, cross-platform game engine. Empowering millions of developers to create high-performance, engaging 2D/3D gam…

Haxe - The Cross-Platform Toolkit

A refreshingly simple data-driven game engine built in Rust

Flax Engine – multi-platform 3D game engine

Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations wit…

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

JavaScript 3D Library.

Ant game engine

Game Engines with Source: Learning from the best

Simple DirectMedia Layer

Extensions to make MonoGame more awesome

Making it easier to work with shaders

A categorized collection of awesome opensource Unreal Engine 4 and 5 repos

Redot Engine – Multi-platform 2D and 3D game engine

A game engine with a fully bindless, GPU-driven renderer featuring real-time path-traced global illumination, hardware ray tracing, and a physics simulation running at 200Hz, built over 10+ years o…

FNA - Accuracy-focused XNA4 reimplementation for open platforms

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

spx - A Scratch Compatible Go/XGo 2D Game Engine for STEM education

Defold is a completely free to use game engine for development of desktop, mobile and web games.

Nez is a free 2D focused framework that works with MonoGame and FNA

Dev repo for @zig-gamedev libs and sample applications

Repository for the pragma game engine.

LayaAir is a fully platform rendering engine with rich 2D/3D rendering capabilities and a mature integrated development platform

Cross-platform .NET 10 C# game engine.