How to Serialize or Save a List of GameObjects

Hi ! I am trying to save a list of objects(Weapons) purchased by the player. I have tried the serialization live training but it didn't worked with game objects. I think that there could be any better way to do this ??? If yes then please tell it to me.... and if No then please tell me that how i can save a list of gameobjects.....

Thank u for giving me time in reading and answering this question.