MUD server, based on CircleMUD code, russificated
Game engine supporting many 3D/2D formats and graphic effects
Mech Station Beta - Tower Defense like Game
The multiplayer game engine
Urho3D Game engine
A cross-platform, open-source, pure C game engine for mobile game
Real-time collision detection and multi-physics simulation for VR
Engo is an open-source 2D game engine written in Go
An elegant Go board and SGF editor for a more civilized age
A simulator for drones, cars and more, built on Unreal Engine
Retro game engine for creating games like it's 1997
An implementation of the popular Sokoban puzzle game. Win/Mac/Linux
Go 3D Game Engine
3D C++ Game Engine - yet another open source game engine
Simple Minecraft-inspired program using Python and Pyglet
KlayGE is a cross-platform open source game engine
A cross-platform 2D game engine
Clojure in Unity
Example code for creating a 2D platform game in Java.
Low-latency, high quality voice chat for gamers
A platform for Artificial Intelligence experimentation on Minecraft
Web powered cross-platform 3D, WebXR game engine