Will it stay open permanetly? I just went on a gaming spree this weekend and got to level 13. Almost done the Moon. But I won't be able to play for another couple months from here on in (work, uni, going to be really busy). My question is, will the vault of glass stay open forever, or is it like a timed thing? If it's timed than that is pretty dissappointing as I will never be able to play it. Any answers would be nice, thanks.