Challenges tend to start when Cooper gets close enough to the door, however, they can begin at the start of level. When challenge starts, the door closes and a big green, slimey question mark appears on it and only when the challenge is complete that the door will open. While mostly rooms only have one challenge, another one can be suceeded after the first is complete. In some rooms, there will be a soup can that finishes the challenge for him.
Rules are guidelines that Cooper must follow if he wants to proceed to the next room.
There are two types of rules; tasks includes completing a challenge in which in the door to the next room could only be opened once the challenge is completed and the other one does not include a challenge and does not need to be followed to open the door but breaking it causes a concequence, summoning the Reaper that will chase Cooper until he leaves the room. Some rooms will have these type of rules with out even having a challenge to open the door.
Rules are assigned to specific rooms, although they are not active every time a room is entered. Multiple Rules can be assigned at once and appear as symbol on the upper left side of the screen. The rules are:
Evertime a challenge starts there is a jingle accompaning it. thumb|300px|right|The Challenge Jingle