> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Gamertags

> Gamertags topic hub covering classic and modern XBOX gamertags, UTF-8 character ranges, backwards compatibility, and rendering best practices for titles.

Explore gamertags topics for XBOX game development.

> [card] [Classic gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-classic-gamertags-overview.md)
>
> Classic gamertags supports only ASCII characters a-z, A-Z, 0-9, comma (,), and space (ASCII character 0x20).

> [card] [Gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-gamertags-overview.md)
>
> Microsoft offers two forms of gamertags - classic and modern.

> [card] [Backwards compatibility and gamertag](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-backwards-compatibility.md)
>
> This article explains the backwards compatibility of modern gamertags and how they are rendered in titles that supports only classic…

> [card] [Best practices and testing for modern](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-best-practices-and-testing.md)
>
> This articles describes best practices and instructions for testing modern gamertags support in titles.

> [card] [Modern gamertags definition and](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-definition.md)
>
> A unique modern gamertag is the combination of the modern gamertag and suffix components.

> [card] [Modern gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-overview.md)
>
> Since 2002, hundreds of millions of XBOX accounts that have been created and the XBOX gamertag namespace was saturated.

> [card] [Gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-toc.md)
>
> This section describes gamertags and provides details about their supported characters.

> [card] [Utf-8 character ranges for modern](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-unicode.md)
>
> This topic describes modern gamertags and the UTF-8 character ranges that are supported for them by XBOX services.


## Related topics

- [Modern gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-overview.md)
- [Gamertags overview](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-gamertags-overview.md)
- [Gamertags (contents)](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-modern-gamertags-toc.md)
- [Classic gamertags](https://docs.xbox.com/services/xbox-services/fundamentals/identity/user-profile/gamertags/live-classic-gamertags-overview.md)
- [XUserGetGamertag](https://docs.xbox.com/reference/system/xuser/functions/xusergetgamertag.md)