# Unknown Device (NFT Fusion)

<figure><img src="https://481286242-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MURc5wXebKee5k4mlPw%2Fuploads%2FlWSEuYuOOjgEAHdj6eUx%2Fimage.png?alt=media&#x26;token=c5c702c8-8a76-407b-a381-7cb2d254abd5" alt=""><figcaption></figcaption></figure>

Starting from 9 Nov 2022, the TOWER Unknown Device is available on the [TOWER Token Website](https://www.crazydefenseheroes.com/fusion/game-assets/?utm_source=medium\&utm_medium=article\&utm_campaign=article_Fusion), allowing players to use TOWER Token to Fuse or track their existing TOWER NFT into a different form:

1. **Fuse Maps:** You can turn your lower tier Map NFTs to higher tier ones with TOWER Tokens

<figure><img src="https://481286242-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MURc5wXebKee5k4mlPw%2Fuploads%2FxgTgKTGY8MTvd9wLhn6H%2Fimage.png?alt=media&#x26;token=258dcd58-2736-455e-abe1-b808161d8aef" alt=""><figcaption></figcaption></figure>

2\. **Fuse CDH in-game chest:** Convert TOWER Map NFTs into in-game chests

<figure><img src="https://481286242-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MURc5wXebKee5k4mlPw%2Fuploads%2F7VZJAXjZkAZV0hqgGg2h%2Fimage.png?alt=media&#x26;token=f6798b43-30fc-4f28-abfc-24abacd83126" alt=""><figcaption></figcaption></figure>

* Only TOWER Map NFTs fusions are available at Stage 1. Players can merge lower rarity Map NFTs to get a high rarity Map NFT, or you can convert the Map NFTs into Crazy Defense Heroes in-game battle chests (not NFT).

[**Learn more about the Unknown Device feature on Medium**](https://medium.com/tower-token/introducing-the-tower-unknown-device-ddb3c31cefb6)