Thousand Parsec is a small but vibrant Open Source Game development project. Thousand Parsec aims to be a framework for building space empire strategy games (often called 4x games). The framework is based on the idea that each server can have their own custom rule sets and a single client should be able to connect to any of them.
Our project has it's own website and source code repositories at http://www.thousandparsec.net/tp/. This project here shows the work our Google Summer of Code students did in 2007. Their code is also available from our website, along with changes since.