> For the complete documentation index, see [llms.txt](https://faq.deltaemulator.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faq.deltaemulator.com/using-delta/nintendo-ds/nintendo-ds-bios-files.md).

# Nintendo DS BIOS Files

Delta requires "BIOS files" in order to play DS games. These are special files that allow Delta to accurately emulate the Nintendo DS system, and you must import them before you can play.

{% hint style="info" %}
Delta 1.6 will remove this requirement.
{% endhint %}