Junqi created the prefabs for all three rooms in SketchUp and then packed and imported them into Unity.
Each room has slight differences to show the elapse of time: Everything gets messier from Room 1 to Room 3.
I’ve added lights and a huge bloom backdrop behind each room to show the different times (status).
The player will interact with the mirror to teleport the character into the next room, and eventually, they have to solve a puzzle in room 3 to proceed with the game.