title: Using Game Center to save/share game data/state
body: <p>After reading the <a href="https://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/GameKit_Guide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008304-CH1-SW1">developer docs</a> and hours of searching various forums I can't seem to find information on how this is done.</p>
  
  <p>Basically I have a bunch of data that I save locally that makes up the current state of the player's game.  I've seen other games such as Tiny Tower, Pocket Planes and Smurf's village actually backs that data up in Game Center.  </p>
  
  <p>My goal here is for players to be able to load up data from their friend's games so they can see how things are progressing.  For example, in Tiny Tower I can view my friend's tower and send him/her gifts.  Similarly in Smurf's Village.  I know I can do this with my own server with login/password but if it works via Game Center why complicate things?</p>
  
  <p>Is it a matter of exploiting Game Center's match functionality?  Or leaderboards? Or?</p>
  
  <p>Anyway can some one point me in the right direction?</p>