Lot of potential. Randomly all of the clues will disappear and you have to close the game out and restart it to get them back. It also reset the reveal perks I won from the current event going on. Lost 8 reveals somehow. They just went away. Themn, sometimes if you need to switch off of the game, it saves your progress and other times it resets the whole puzzle and you have to start all over. Very annoying.