> For the complete documentation index, see [llms.txt](https://idlegame.gitbook.io/idlegame/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://idlegame.gitbook.io/idlegame/idle-openshop/gacha-feature-book-kol.md).

# Gacha Feature – “Book KOL”

In the real world, businesses often hire reviewers or influencers to promote their stores. In our game, this concept is introduced through the **“Book KOL”** feature.

* **Unlock Requirement:** Available at **Menu Level 3**.
* Cost Calculation:\
  \- Average price of all drinks in the menu × 20
* Effect:\
  \- Each activation will attract a **random number of customers (10–30)**.\
  \- Just like regular customers, these guests generate earnings equal to **95% of the selling price**.
* Revenue Allocation:\
  \- Any net revenue generated from this feature is added directly to the **Initial Pool** of the next season, strengthening the game’s long-term economy.

This mechanic not only adds an element of randomness and excitement to gameplay but also contributes to the sustainability of the seasonal reward system.

**Note**: All customers from this feature must be used within the day.

<figure><img src="https://3758650955-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQWPiL4bjYSaDuX5hxnLM%2Fuploads%2FPUJ6eOjaJoOL1RxL3BpO%2Fimage.png?alt=media&amp;token=fc8fe891-6552-4cac-9024-3091422b7f92" alt=""><figcaption></figcaption></figure>