I've stayed in Germany 11 days longer than the 90/180 rule alows (I'm a Brasilian national). Leaving Munich airport I only had to sign a form confirming I understood the committed infraction. The officer (who was very friendly and in a very good mood) didn't put any extra stamp on my passport besides the ordinary exit-date stamp.
I have a girlfriend in Germany and we have 2 daughters. So far I was going there as a tourist all the time because I work offshore in Angola, and the 4-week in / 4 out rotation was keeping me half of time away from Germany. But recently I had some extra time off so ended up overstaying.
Question: can I return to Germany before waiting the 90 days if it is for familiar reunion? Having 2 kids there registered with my paternity would make things easier I suppose.