In PixelPAD, rooms are where your project takes place. A room is defined by a room script, which is a Python program whose main purpose is to create and connect objects. You can think of a room as a "scene": a collection of objects working together to present a specific scenario to the player. There can only be one room active at a time. To change which room is active, use the set_room function. Changing the active room will destroy all objects created in that room. To ensure objects are NOT destroyed, you must set the persistent property in that object to True. object.persistent = True