This room appears to be a massive theatre. Countless seats litter the room, more than the silly little cast could ever fill. You seem to have come in through the lower entrance, right next to the stage...there looks to be an entrance to the upper floor somewhere, but it's inaccessible for now.
Arsenic: Once she gets to the end of the large hallway, she's greeted with a massive room.
Filled with supplies-- from cables, to props, to miscellanous supplies...it was like a treasure trove of miscellaneous items.
Jasper: The rest of the group quickly came in as well, staring in awe at just how much there simply was.
...But then, Jasper gasped as he stepped over to an opened box of art supplies. "Hell yeah, we found it! Look, Arsenic-- a bunch of canvases, paintbrushes, paints...we got everything we need to help with your dare!"
Stranger: "Your dare, huh? Makes sense." He says, perusing through all of the stuff himself.
MX-Z0: ...But meanwhile, something else catches Mixzo's eyes.
Walking past all of the stuff, she sees another door. Could this really lead to another room, or is it just some closet...?
Regardless, she opens the door.
MX-Z0: "...Huh!?"
Stranger: "!!"
Stranger: "What is it, Mixzo?"
MX-Z0: "This..."
She finds herself on the massive stage of the theatre room again. "...Is a backstage door?"
Jasper: "Really!? ...I mean, it makes sense. There's a lot of theatre stuff back here!"
Arsenic: "...Hm. Two entrances to this one room?"
Jasper: "It's a theatre, right? Don't those normally have more than 1 entrance to them?"
MX-Z0: "Hm...regardless, this is useful for the future. And there's a lot of supplies back here people might need. We can tell everyone about this on the group chat, perhaps-"
Upon pulling out her tablet, she seems surprised at what she sees. "...Oh?"
Rue: I demand that everyone meets me in the living room. There is something important I have to say.
Bryan: Huh?? What
Clober: But its soooo early!
Seven Stones: Its almost noon though?
MX-Z0: We'll be there. What do you have to tell us?
Rue: I will explain when everyone is there.
Stranger: "Huh? Someone say something?"
MX-Z0: "Indeed. Rue wants everyone to meet in the living room, for some reason."
Jasper: "Well, we're right next to that place, right? We can just tell everyone about the backstage door there."
Stranger: "True...but why would Rue of all people call a meeting?"
MX-Z0: "We'll get our answers by going there."
She heads off, jumping off the stage and exiting using the traditional entrance. Without much time to waste, the others follow her.