Ooooh, Ellie would love that.

Meghan thinks that there couldn't be a better person to be queen.

This is what Millie's been waiting for all her life, what she was born for. Obviously she wants it. 

Isra didn't know she wanted that until just now. Wanting to be a god feels heretical—but magic—and the concept it's using for 'god' isn't quite the same as when she thinks of Allah anyway—magic—

Yes. Yes she wants that. 

The world peels away, like a paper backdrop in a theatre revealing the wires and ladders behind it.

Instead of the backstage of a theatre, what is revealed between the cracks of reality is an infinite starry void. Uncountable universes drift like glittering soap bubbles in the endless expanse. 

The four of them find themselves floating in the nothingness, with the tiny bubble of a world in the centre of their rough square. 

'This new world shall be yours,' the voice says, 'but not yours alone. You may shape it as you please, but all must agree on every particular before it can be made reality. Choose wisely...'

Next to the nascent world, a cloud of colourful marbles wink into existence. Each marble glows with a spark of potential. They all know, without needing to count, that there are precisely one hundred and twenty-five marbles. 

Ellie lets out an appreciative gasp. And spends a minute looking at everything. The other girls being here is kinda surprising too.

"Oh, hi."

Meghan doesn't let the surprise reach her face, but she somehow didn't expect her inner hubris to be answered this thoroughly.

"Hi. Also, what the fuck."

Are they literally floating? Can her foot "tap" the floor - or whatever passes for a floor here?

There is no floor for Meghan's foot to tap.

"That's not very appropriate language!" says the blue-haired girl. "And who are you? I was promised ultimate power!" 

She's wearing a fancy dress and looks to be somewhere in her early teens. 

Oh, good, a target to vent, maybe this place isn't so bad after all. "I was promised ultimate power too. And even if I was not. What. The. Fuck."

Ellie will... talk to the fourth girl. "Did you also get offered to shape a world or something?"

"Yep. —oh, uh, hi, I'm Isra." She looks about fourteen and very lost.

"Sorry, I'm still processing the fact that magic is real." 

"When I am offered ultimate power," Millie says to the void, "I do not expect to find myself sharing it with three other people! This is false advertising and I will not be dealing with you again!" 

She stomps her foot, which would be more effective if there was a surface for her foot to stomp. 

She turns to Isra. "And what kind of idiot doesn't know magic is real?" 

"Wow, and that is appropriate language? You don't know Isra's life."

Ellie actually laughs a bit at Millicent's ineffective tantrum. "Did you touch the artifact that brought us here? I am sorry, I didn't get an explanation for how it worked."

"I don't remember touching an artifact. Just hearing a voice. Did you all hear the part where it said we can do whatever we want with this world as long as we all agree?" 

"Yeah, I was at my apartment. Heard the voice and then was here."

"Same deal. It's far from a typical Tuesday for me, but beats studying for trigonometry." She looks at the baubles.

The marbles inform her wordlessly that there are one hundred and twenty-five of them! Would she like to know what they can do? 

Yes, she would. Carefully, since this thing didn't exactly wait to inform her that this would be a group casting ritual project. But she would like to know what they can do.

The marbles explain themselves! They include all four girls in their explanation, which, like the mysterious voice, settles in their minds without bothering with anything as crude as 'sounds' or 'words'. 

Each marble is a unit of potential, which they can use to shape their world. One marble's worth of power can do things like make the world four or five times bigger, double or triple the starting population, create up to 20 sets of paired gateways between different points in the world, make the girls' own future place in the world a bit more luxurious, grant the four of them the power to teleport or levitate or understand any language, or let them bring some friends with them when they make the new world!

More powerful things cost more than one marble, and there are also ways they can get more marbles if there are more than one hundred and twenty-five marbles' worth of things they want to add to their world. 

"All that talk about 'godlike power' seems more like a con every minute." 

Mind-communication, how spooky.

(Deep down Meghan is impressed and more than a bit intimidated, but like hell she will let that reach the surface.)

"Sorry that we are going to settle to only a fraction of godlike. What a tragedy." She tells blue-hair. "Does this thing have a way to sort things into a maybe pile?" She asks this to the baubles.

"I really would want to bring in my boyfriend," Ellie comments.

Tentatively, she sees if she can float around this 'area' they are in.

Moving around in the void is as easy as wanting to. 

The marbles are happy to be sorted into whatever piles Meghan likes! Nothing will happen just from touching them. She can also ask the void for things, like boxes to sort them into, or paper to write things down. 

They think Ellie would be able to bring her boyfriend with her to the new world just fine! It wouldn't even take up a whole marble's worth of potential. He can't come and hang out with them in the void, though.