The Chests can be purchased in bulk from the game’s store for 100 coins each (they’re found under the “Special” tab – the gold star). The chests contains a countdown timer that allows them to open exactly 24 hours from the time of their purchase.
If you play CrowdStar’s Happy Pets, this item should be pretty familiar with you, as it resembles the Happy Pets mystery box in its functionality. Like the Happy Pets boxes, the Mystery Treasure Chests can be given added luck by your friends, supposedly increasing the rarity or value of the item you’ll ultimately find inside. Click on the treasure chest and you’ll have the chance to post a news item to your feed asking your friends to click and “add luck” to the box.
Make sure you log into Happy Aquarium sooner rather than later, to make sure you pick up your free Mystery Treasure Chest, or, feel free to buy a slew from the store. What did you receive inside? We’d love to hear from you – let us know in the comments!