Ivans are playing cards.
Mileses, including Solvei, are debating the wisdom of borrowing another strategy game from Bar; Mark, a voice of caution, does not know what will happen if all of them (Solvei, Mial, Miles, Milo, Stalas) all start screaming at each other in twenty directions.
And -
"Terraria weapons are pretty exciting. I'd want to make sure you knew how to use them and could, though, I'm not sure where they fall between 'can't use stacks' and 'can eat candy' in terms of things you can do without whatever it is that makes me Terrarian enough to use stacks."
She separates the rest of Milo's Life Fruits and then starts digging in her pockets and pouches in search of a less exciting weapon.
"Not the Last Prism, that's nearly as bad..."
She goes over to the door again. She bumps her hip into a booth-bench in so doing but barely feels it; she laughs. She opens the door, leans out.
"Despair monsters," she reports, on closing the door, "warp space, but insofar as they have sizes they and their customized environments full of minions are, together, bigger than a house."
"Well then. I would actually be willing to fight the Moon Lord enough times to make you a Celestial Staff of your very own, but I definitely want to take you outside and show you what it does first. It's very... very."
Milo has now eaten his last Life Fruit. "How are you feeling?" asks Sable. "That is some exceptionally unnatural health you've got going on there!"
"How does 'the Moon Lord' be a thing you can fight many times? Does it not die, just go dormant...?"
"...There's a coherent explanation but it's a very Terraria explanation and I'm not sure how well I can actually convey it," she says.
"Okay," says Sable. "So first of all, the world of Terraria is a perfectly flat grid of square areas of ocean each with an island in the middle. I started on one island, and explored a bunch more afterward. I don't know how many islands there are in total, or whether they just go on forever in every direction. The island squares are separated by perfectly flat walls of weird magic fog that takes a few seconds to fly through no matter how fast you're going."
"Apparently. I don't know anything about that part. Anyway, as far as I can tell, when a person starts out in Terraria their island is more or less safe - I mean, there are horrible monsters that try to kill you at night or when it rains, and dangerous areas full of even more horrible monsters that try to kill you more vigorously at all times of the day or night, but I can imagine someone without previous combat experience surviving it if they were clever and listened to the soulless person-things. That's how it was for me at first."
"You're not wrong. Anyway, but even in an island's safe-ish era, you can get in trouble if you go to the wrong place or do the wrong thing. One of the wrong things it's possible to do is fighting a certain kind of monster very deep underground in what's called the Underworld, because that particular monster carries around a little doll and when you kill them they drop the doll and if the doll lands in lava and burns up, it kills one of your soulless person-things and summons an enormous and extremely horrible monster called the Wall of Flesh. And after you kill a particular island's Wall of Flesh, a lot of things about the island change, including different, worse monsters in more places that attack you more often. But even though it's called the Wall of Flesh, and there's only one of it at a time per island, killing it in one island doesn't affect any of the others. And if for some insane reason you want to fight it again in the same island after you killed it the first time, you can do that, you just have to wait until the dead soulless person-thing is replaced by another one and then drop another magic doll in Underworld lava."
"I don't know what that means, but I agree that it's very weird," says Sable. "Getting back to the Moon Lord: the Wall of Flesh is the only monster that changes the state of the island like that, but there are plenty of other big nasty monsters that show up under really specific circumstances and nearly always only have one of themselves in one island at a time, and the Moon Lord is the last and nastiest."
"How are you going to find more Moon Lords to fight to get us cool magic artillery, then?"
"Well, similarly to the Wall of Flesh, he can be re-summoned after I defeat him in any particular island. It's just a little more complicated to get from 'I want to fight the Moon Lord' to actually being chased by an enormous green tentacle-faced man with no legs."
"It's been about two years since the first time I fought him, I've been all over my island and pestered my soulless person-things for advice, I've checked other islands that have seen the Moon Lord, and I can't find a way to summon the next strong monster. So if there is one, it's uncharacteristically well-hidden."
"This sounds more videogamey every time you say something about the place. I should show you a video game of some kind but all that's coming into my head is Pokémon and it's not that much like Pokémon in particular."