This is not unique to Germany. Finland also offers free degrees for everybody, although there are rumbles about changing this from 2017-ish. Get in while you can ;)
http://www.studyinfinland.fi/tuition_and_scholarships/tuitio...
It's also worth mentioning that in smaller countries like Finland, the level of English is correspondingly higher, since everybody has been exposed to it since they were young children and, by the time you get to the university level, most textbooks are in English only. In larger EU countries like Germany and France this is not the case.