It's no surprise that as twins, the Twofer seem to have their own unique way of playing with each other. They already know the object of the game, the characters involved, and the adventure they are going on as they wander down the stairs with their walkie-talkies, binoculars, and sunglasses.
It's a daily dose of improv in my house:
M/Chicosay: "Calling Toofree, calling Toofree. Where's the mazradeur we need? Have you located it yet?"
L/Toofree: "It's in the clubhouse. I'm heading there now. Can you meet me Chicosay? Bring the flashlights!"
They also have designated roles that they play which doesn't really seem fair to me, but what do I know? I'm just the 3rd wheel they call Mom.
M's List of Roles: Mommy Princess Queen Fairy Baby
While L is always the: Daddy Pony Dog Cat and Worker
Mommy's Role: Costumes, Props and Craft Service (mend dress-up clothes, get flashlights working, serve Go-Gurts)
Sometimes they are both fairies, adventurers, etc. Still, for the most part they have reached an agreement on this without ever discussing it. An older sibling will engage the younger one in a particular role. With twins (my twins, anyway) they seem to automatically know.
And they seem happy like that...usually for at least an hour. Nothing lasts forever.