A cross-platform, open-source, pure C game engine for mobile game
Web IDE in single HTML file
Cross platform SDK
Engo is an open-source 2D game engine written in Go
Growth-grammar related Interactive Modelling Platform
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Go 3D Game Engine
KotCity, an open source city simulator
Cinema Enters Game Console
ZED OS the clone of Windows XP
Modern 3D engine and IDE written using C# and C++.
Data-oriented and data-driven game engine written in Rust
Cross-platform 2D and 3D game engine
JPHP - an implementation of PHP on Java VM
A complete framework for Godot to create beautiful and complex AI
Unity 3D Project
A cross-platform 2D game engine
Clojure in Unity
Character animation system for games and simulations.
Source code of the chapters of the book 3D Game Development with LWJGL
A simple game to entertain all family
Blueshift is a cross-platform 3D game engine implemented in C++
Test project with a 2D platform game developing in Godot 3.1
Portable game engine with main focus on point-and-click adventures
Web powered cross-platform 3D, WebXR game engine