Sins of a solar empire is DRM-free. http://forums.sinsofasolarempire.com/post.aspx?postid=303512 It has sold 500,000 copies. http://arstechnica.com/journals/thumbs.ars/2008/09/05/solar-empire-moves-500-000-units I wish more game companies would take notice. All hail Stardock!