*Marco watches Riku for a moment before replying*

That the ship is one big illusion, our worlds have been destroyed, and anyone who leaves dies.

*He waits a couple seconds to see if Riku reacts before continuing*

Of course we can neither prove nor disprove the last two, so they might not be true.

Anything else, you'd have to tell me what you knew already. I linked you to Godric's welcoming post, right? The basics are all there.