> For the complete documentation index, see [llms.txt](https://book.rochat.ai/rochat_book_en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.rochat.ai/rochat_book_en/how-to-create-a-game-in-rochat-ai-avg/game-protagonist-and-background.md).

# Game Protagonist and background

## **Game Protagonist**

Here, you can choose any character from your library or public characters created by others. In the game, the AI will refine the protagonist's identity and personality information for the character's setting.

## **Game Background**

<figure><img src="/files/GIpw1DiVLrbJ03JpNWXM" alt=""><figcaption><p>You can also edit according to your ideas.</p></figcaption></figure>

You can use {char} and {user} in the game background, where {char} represents the game protagonist and {user} represents the game player. Usually, using {char} and {user} instead of personal pronouns makes it easier for the AI to understand character settings and relationships.

Here are two tips:

The game background can correspond to the game scenes and mission objectives, which helps the AI better understand the complete game setting.

* If you create less popular or lesser-known content, you can use prompts in the game background to help the AI better understand your intentions:
  * World Setting, Locations, characters, legends, stories, powers, skills, abilities, plots, battles, and events can be freely and creatively taken from "Sherlock Holmes."
* If you want the game to progress in a specific direction, you need to modify all the content generated by the AI for you.
  * including the title, theme, tone, story overview, final goal, world description, and the relationship between {char} and {user}. Provide as many details as possible, such as: hierarchy, who holds power, who doesn't? What is the current situation? Is there a war going on? Is it peaceful? Finally, what does this place look like? Is it a dry wasteland, a city, or the underworld? Describe this in some detail.