The Mystery box is an item obtained as a reward from Court Cases. Before the random event updates, the Quiz Master random event would reward the player with a choice between the Mystery box or 1,000 coins. This was a gamble, as the box contained items worth both more and less than 1,000 coins. Since the update, the 1,000 coins benchmark is no longer important, as there is not an option between a guaranteed 1,000 coins and a random reward. Choosing the Mystery box over other rewards from the Random event gift is still a gamble, however, as most other rewards from the Random event gift are worth more than most rewards from the Mystery box. The Mystery box can be banked, however, it can't be traded. Also, the Mystery box received from Court cases does not stack with the ones obtained from the Random event gift.