Mystery boxes appear randomly in Hay Day and contain various items. There are several different types of boxes.
Mystery tool boxes
Mystery tool boxes are red, chained tool boxes "popping" out of the ground in the farm area. If a box is locked, which is often the case, players can open it by spending some diamonds. Once the box has been opened or rejected, it disappears into the ground.
Probabilities iconProbabilities icon
Players can check the probabilities of the box containing certain items by tapping on the dice icon in the top left corner of the pop-up. Prizes include diamonds, coins, vouchers, supplies, and boosters.
Ordinary box
Mystery tool boxMystery tool box
Ordinary boxes can be with opened with 3 diamonds. The top prize is 5 diamonds.
Big box
Big mystery tool boxBig mystery tool box
Big boxes can be with opened with 10 diamonds. The top prize is 13 diamonds.
Huge box
Huge mystery tool boxHuge mystery tool box
Huge boxes can be with opened with 20 diamonds. The top prize is 25 diamonds. Expansion permits are found in huge boxes.
Treasure chests
Treasure chestTreasure chest
Treasure chests appear in the town lake. Locked chests can be opened by spending 5 diamonds. Once the chest has been opened or rejected, it sinks into the water.
Players can check the probabilities of the chest containing certain items by tapping on the dice icon in the top left corner of the pop-up. Prizes include diamonds, vouchers, supplies, puzzle pieces and boosters. The top prize is 8 diamonds.
Seasonal mystery gifts
Seasonal mystery gifts appear in the fishing area when a seasonal theme is on: a ghost appears around Halloween, present boxes appear around Christmas, firework barrels appear around New Year's and Chinese New Year's. These are never locked.
Halloween Ghost.pngMystery Present.pngMystery Fireworks.png
Each gift can contain a supply item, a lure, a voucher, a seasonal decoration, 1 to 3 diamonds or the Secret Coffin, a special decoration given by the Halloween ghost.
Strategy tips
Don't forget to check for Treasure Chests. Many of us find Mystery Boxes on the farms of other players, but don't forget to look in their towns to find Treasure Chests floating off shore.
If a Mystery Tool Box is found on your own farm, it is very likely for one to be found on another farm at the same time.