> For the complete documentation index, see [llms.txt](https://yourun-ltd.gitbook.io/warshmallowsworld/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yourun-ltd.gitbook.io/warshmallowsworld/welcome/the-technical-aspect/interoperability.md).

# Interoperability

The main idea in making Warshmallows Classic meet Warshmallows Sandbox and Warshmallows NFTs is to show the world how a game and a metaverse can be interoperable. Basically, EVERY element acquired or collected in the game will give access to an element in the other game version.

<figure><img src="/files/oBeIVjYRLDYosrKnh0iD" alt=""><figcaption><p>Warshmallows World - Green in the metvaerse</p></figcaption></figure>

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By purchasing loot boxes either in the Warshmallows store, the NFTs marketplace, or even the sandbox marketplace, you can unlock for example the character "Green classic" which will be automatically unlocked in all games. This means that if you unlock the green classic in Warshmallows NFTs, it will automatically be unlocked in Warshmallows Sandbox and Warshmallows classic.


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