When you first download this you can play it offline but if you close it and reopen it you have to play online and there is a 30-50 second add every 30 seconds, over 50% off the time you are trying to play is adds, while I know sponsored ads bring in revenue this is excessive, if there was an add every 5 minutes I would consider keeping the game installed but untill this is the case I'm uninstalling because this takes all the fun away, more people would play this longer with less frequent ads