How would keys be worth anything if there's no master server?
BECAUSE THERE IS A GHOST WHO LOVES BLOCKLAND SO HE RAN THE MASTER SERVEROOOOOOOH SPOOKEY
I suppose he's saying that if blockland suddenly because unavailable for purchase by any means.I dunno, LAN parties much?
AAAAA-AAAA-AAAA-AAAA is a valid key if the master server can't be reached.