@QueenMia I love them all, depending upon the level each special candy can be amazingly useful! I chose my top 3 favorite special candies because no matter what obstacles and requirements are needed for any level, they are always a HUGE help, especially if any of them are combined!! Listed in order, with my absolute most…
I have this same question. I have completed multiple levels after the chest appears and still haven't found a key. There doesn't seem to be any other clues, images, or guidance on these chests and their mysterious keys in the game other than the one little mouse.