> For the complete documentation index, see [llms.txt](https://docs.phala.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phala.world/introduction/interaction-of-phalaworld-nfts.md).

# Interaction of PhalaWorld NFTs

> 🪐 The NFTs in PhalaWorld are soul-bound NFTs based on the [RMRK2.0](https://app.subsocial.network/@rmrkapp/introducing-rmrk-2-on-singular-app-31668) standard on Khala Network.

**First,  let's have a quick glance at PhalaWorld in this 7 mins video.**

{% embed url="<https://www.youtube.com/watch?t=42s&v=lSzzIdW7lgU>" %}

There are two main kinds of NFTs survivors could equip in PhalaWorld--SHELL NFT and SPIRIT NFT. SHELL NFT represents the user’s physical body, and SPIRIT NFT represents the soul. Only when the two NFTs are combined together, will users get a whole character in PhalaWorld.&#x20;

**To facilitate understanding, we sort out the logic of NFT**

![](/files/uZxKGK7cn8Ww1kNbDr5Y)

The combination of the two NFTs constitutes a complete PhalaWorld NFT, which truly realizes the Soulbound concept.

![](/files/VoGrhBDlgysimy1ssbMt)

The combination of the Seal NFT will upgrade DPS in the PW Game.

![](/files/J91uve5JXSqinrujH6nT)