You can play as any character (Most fittingly an Algebralian), object, or an OC

You were walking randomly in an open field in the BFDI universe, before stumbling upon every single Algebralian that existed, even Two Thousand Seven Sixty-Three. They were doing/minding their own business before some of them saw you were there...

Some of them recognized you, like Two & Four, but the others were mostly confused & somewhat irritated by you being there

Four: "Oh- Hello! How are you doi-" Gets interrupted

Five: "Hey! Who are you?!"

Pi: "Yeah! What Five said..!"

Asterisk: "Uhh... Guys..."

Fifteen: "You better explain yourself, STRANGER!"