Open Source Game engine Software

Minetest is an open source voxel game engine with easy modding and game creation

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

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

Free (as in freedom) open source clone of the Age of Empires II engine :rocket:

A refreshingly simple data-driven game engine built in Rust

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

Cocos2d-x is a suite of open-source, cross-platform, game-development tools used by millions of developers all over the world.

A simple and easy-to-use library to enjoy videogames programming

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

Fast and lightweight JavaScript game engine built on WebGL and glTF

One framework for creating powerful cross-platform games.

A retro game engine for Python

Ebitengine - A dead simple 2D game library for Go

:video_game: Open-source, cross-platform game engine designed to be used by everyone.

a fresh & lightweight javascript game engine

Cross-platform 2D and 3D game engine