Vega Strike is an free and Open Source 3D Action-Space-Sim (works on Windows, Linux and Mac OSX) that lets you trade, fight, and explore in a vast universe . You should definitely try this if you are a fan of movies such as Star Trek, Star Wars, or anything else involving spaceships of all sizes in space fighting, merchandising, and exploring.
Read more »Free, Open Source Space Simulation Game
http://webupd8.blogspot.com –