But its been dropped by development and its sad because the app now consistently crashes on ios9 so you need to keep reloading the game to play.
Perhaps this is indicative of Apples App Store policy that encourages developers to abandon apps as they only make profit on making new apps and nothing to maintain their current ones. Once sales drop and as the app has made a critical mass of paid users, just walk away and make something new. Finger to the paid customers if it doesnt work with new iOS releases
MJM in Canada about World of Goo, v1.5