> For the complete documentation index, see [llms.txt](https://roogame.gitbook.io/roogame/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://roogame.gitbook.io/roogame/survivors-roguelike-kit/configuring-the-exp-system.md).

# Configuring the Exp System

### Configuring the Experience (EXP) System

This guide shows you how to adjust the core EXP progression formula and customize individual EXP pickups in the RGame RoguelikeKit.

#### 1. Adjust Level-Up Requirements

1. In Unity’s Project window, navigate to:

   ```
   Assets/RGame/RoguelikeKit/ScriptableObjects/DataSO/Exp/ExpConfig.asset
   ```

   <figure><img src="/files/n6ElT1BF0kS0QLQOy6YW" alt=""><figcaption></figcaption></figure>
2. Select **ExpConfig.asset** and inspect its two properties:

   * **Base Experience**: EXP required to reach Level 1.
   * **Experience Increment**: Additional EXP required per level.

   <figure><img src="/files/2SgGtNrcgAXL5t7hJKXS" alt=""><figcaption></figcaption></figure>
3. **Formula**:

   > EXP required for Level *n* = **Base Experience** + **Experience Increment** × (n – 1)

   * Example: Base = 100, Increment = 50
     * Level 1 → 100 + 50×(1–1) = 100
     * Level 2 → 100 + 50×(2–1) = 150
     * Level 3 → 100 + 50×(3–1) = 200

Adjust **Base Experience** and **Experience Increment** to tune progression pacing.

***

#### 2. Create or Modify EXP Pickup Prefabs

1. Navigate to the EXP prefab folder:

   ```
   Assets/RGame/RoguelikeKit/Prefabs/DropOut/Exp40.prefab
   ```

   <figure><img src="/files/1PgVkADSqhsgly5PJQRz" alt=""><figcaption></figcaption></figure>
2. Select **Exp40.prefab**. In the Inspector, you’ll find the **Exp** property. This value determines how much EXP the player gains when collecting it.

   <figure><img src="/files/48efjP3ClftRK0ropgP5" alt="" width="419"><figcaption></figcaption></figure>
3. To create a new pickup:
   * Duplicate **Exp40.prefab** (CTRL +D or right-click → Duplicate).
   * Rename (e.g., **Exp200.prefab**).
   * Modify its **Exp** field to your desired amount.

***

#### 3. Register Your EXP Pickup with the Object Pool

1. Open the pool configuration asset:

   ```
   Assets/RGame/RoguelikeKit/ScriptableObjects/RuntimeDataSO/Pool/Pool.asset
   ```

   <figure><img src="/files/hgvNEIpUexaQaRZa7vSD" alt=""><figcaption></figcaption></figure>
2. In the Inspector, click the **+** button under **Pool Entries**.

   <figure><img src="/files/uxeZ4Jrg9sEDk6UauCDg" alt="" width="418"><figcaption></figcaption></figure>
3. Assign your new prefab:
   * **Key**: A unique string identifier (e.g., `Exp200`)
   * **Prefab**: Drag your **Exp200.prefab** here.
4. This registers the pickup with the object-pooling system.

***

#### 4. Assign EXP Pickups to Enemies

1. Choose any enemy prefab (e.g.):

   ```
   Assets/RGame/RoguelikeKit/Prefabs/Enemy/CherryMonster.prefab
   ```

   <figure><img src="/files/dJWj0esMGNTFS3WjD4IE" alt=""><figcaption></figcaption></figure>
2. In the Inspector, locate the **DropOutKeys** list.

   <figure><img src="/files/svS2OOBmA6yDkHwTXt8q" alt=""><figcaption></figcaption></figure>
3. Add your EXP key (`Exp200`) to this list. On enemy death, the pool will spawn your custom EXP pickup.

***

With these steps, you can fully control both the level-up curve and how much EXP each pickup grants. Happy tuning!