A cross-platform interpreter for many point-and-click adventure games
OpenKore is an automation tool for Ragnarok Online
Descent 3 by Outrage Entertainment
3D game engine/framework in C, with Luajit and Python bindings now
The All-in-One music game
Provides a full suite of clients and servers for virtual worlds.
Amazon Lumberyard is a free AAA game engine
An updated version of the classic "Basic Computer Games" book
Games for tomorrow's programmers
Fully async, multithreaded, predictive, open source, 3.01 reach
JavaScript-based game engine designed to empower developers
Java applications to control a model railroad layout.
The Sokoban game implemented in Java.
Zoomable user interface (ZUI) with file manager, file viewers and more
GPS track editor for editing tracks and planning (multiple) day tours
HTML5 Canvas Tower Building Game