Zipline Games on Facebook: Last Entry 21. November 2013
Zipline Games Website: © 2010-2013 Zipline Games, Inc.
It seems there is no more Developer here.
If this is true, I wonder why it is always been told here, that things are progressing. Why don't you tell us "it sucks, but the App is dead. Sorry."
So finally I hope that there is another way of progression (another developer or whatever) going on, and that this is why we are kept on hold.