Svelto ECS C# Entity Component System
RTSish Game Engine
Full featured MUD server with all the trimmings.
Rust library to create a Good Game Easily
Game engine for playing tomb raider 1 - 5 levels.
Java game engine for shoot 'em ups, using Java2D.
Framework for a graphical point and click adventure game in Java
Demonstrating the features of jMonkeyEngine 3.