> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.drimify.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Available Query Strings

You can customise the experience of your games and leaderboards by passing information directly through query string parameters in the URL.

## Game Parameters

These parameters allow you to pass user information into the game session:

| Parameter | Description |
| ---- |
| `session_uid` | A unique identifier for the player’s session. |
| `fname` | The player’s first name. |
| `lname` | The player’s last name. |
| `email` | The player’s email address. |
| `ref` | The player’s referral. |
| `phone` | The player’s phone number. |
| `preferred_lang` | Forces the experience language; falls back to default if unavailable. |


|| 👉 For more details, see [Passing user information via URL parameters](https://help.drimify.com/en/article/game-uses-query-string-uojh17/).

## Leaderboard Parameters

You can also control the timeframe of data shown in the leaderboard by passing date values via query strings.

| Parameter | Description |
| ---- |
| `leaderboardStart` | Defines the beginning of the leaderboard timeframe (format: `YYYY-MM-DD`). |
| `leaderboardEnd` | Defines the end of the leaderboard timeframe (format: `YYYY-MM-DD`). |
| `ref` | Filter the leaderboard based on the user referral |

||| ⚠️ These parameters will only override the timeframe option if both start_date and end_date are included in the leaderboard URL.