> For the complete documentation index, see [llms.txt](https://whitepaper.stepn.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.stepn.com/earning-module/mystery-box-system.md).

# Mystery Box System

Mystery Boxes, containing GST, Minting Scrolls and Gems (Levels 1 – 4), drop randomly during an activity. Each user has 4 Mystery Box slots.

Mystery Box has 10 qualities, with the opening countdown beginning automatically upon receipt. Opening costs a small amount of GST (Base cost) which increases with the box's quality.

Mystery Box drops are influenced by the following factors:

![](/files/7r1KR0PhqeeDGP0O4tZz)

1. PSL: Player Sneaker Luck
2. PSLC: Player Sneaker Luck Coefficient (Gem/Socket, NFT badges)

![](/files/uhoxEe5uJUuauOwZW2Ec)

In essence, the quality of a Mystery Box is affected by the amount of Energy used in a single session and the Sneaker's Luck value.

Transferring a Sneaker from a Spending Account to a Wallet, resulting in Energy reduction, will lead to the purging of all Mystery Boxes in that particular Realm.

### **Slots and Drop Rate**

* There are four Mystery Box slots available across all Realms. A new Mystery Box cannot be received until an existing slot is freed.
* It's important to note that the drop rate for Mystery Boxes is not guaranteed.
* Listing a Sneaker on the marketplace, resulting in Energy loss, does not lead to the burning or purging of Mystery Boxes.


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