Board Thread:Game Discussion/@comment-10276925-20130831002217/@comment-11490363-20130903195714

I asked Mobage about the ruby bridges and what the percentages were, and this is the response I got, very vague and bullshit-y:

" I'm Travis, thanks for the email!

I don't have access to the precise percentages for the Ruby Space Bridges, but you're going to be getting some good cards if you choose to use them. The card drop is a random one, and sometimes users can receive duplicate cards, but it will always be something that is useful.

 If I can help you with anything else, let me know and I'll see what I can do for you! "