Hmm, am I missing something for the True Ending? I read something about getting all the balloons in one of the comments, and have collected a set of balloon items each from the green and blue cucumber buildings at the end (veggie balloons and pool party balloons), but I'm not getting an ending that gives me the epic credits that the main menu mentions.
Is there another set of balloons I'm missing somewhere? Been looking all over with no luck :P