Actually, I do think there are a special title protections in Sweden that have to do with copyright (only nitpicking because Markus is Swede
).
Copyright does have the "independent discovery" clause though so you are only liable if you actively copy someone else, not just because you happen to give your game the same name as some song you never heard (or if you copy a work whose copyright has expired, like me naming my installation Nevermore after Poe's The Raven, despite that Soundtrack of our Lives apparently has a song called Nevermore too).
