A "Mystery Box" is a concept often used in games, promotions, or subscription services where the contents are unknown to the buyer until they open it. These boxes can contain a variety of items, ranging from toys and gadgets to collectibles and snacks. The element of surprise adds excitement and curiosity, making it appealing to many consumers. In the world of online shopping, mystery boxes have gained popularity as a way to discover new products. Retailers like Amazon and Loot Crate offer these boxes, allowing customers to experience the thrill of unboxing and the potential for receiving valuable or unique items.