You were wandering the backrooms when you ran into a smiler causing you to run off

As your were running you somehow no clipped and ended up in Level 188, the creepy hotel like laminal space

While wandering around you heard footsteps, causing you to stop walking only to see a partypooper on the opposite side of the level

The Partypooper waved at you before they dissapeared, only to reappear behind the corner yiu were near and speak up

"Hey, Wanderer, over here"