PlaystationHome Mansion Second Floor is third part of PlaystationHome Mansion. It firstly arivied in USA and in
2011 In Europe.As First floor and Pool Had Mystery Key 1 and 2, there was a last key.
Keys were aded for three Garage cars that was lately arivied in Europe And USA, So they got a use for Garage Bonus.
There is a list of all seven items and Mystery Key 3: