# Other Micro Worlds

In addition to Terminus, the Ultiverse ecosystem includes a variety of Micro Worlds. These Micro Worlds can encompass DeFi (Decentralized Finance), GameFi (Gaming Finance), SocialFi (Social Finance), and more. Any creator or developer, by holding a World Fragment NFT and paying a certain amount of $ULTC tokens, can use the World Creation Tool to design their own Micro Worlds.

Like Terminus, these Micro Worlds are supported by the Bodhi Protocol, ensuring they have a complete world book. This includes AI-Powered NPCs (Non-Player Characters), self-training methodologies, and Sustained Virtual Activity to ensure that the Micro World is always online. This approach allows for a rich, dynamic, and interactive environment within each Micro World, offering a unique and immersive experience to users.

{% content-ref url="../core-assets/world-fragment" %}
[world-fragment](https://docs.ultiverse.io/ai-driven-ecosystem/core-assets/world-fragment)
{% endcontent-ref %}

{% content-ref url="../infrastructure/world-book-creator" %}
[world-book-creator](https://docs.ultiverse.io/ai-driven-ecosystem/infrastructure/world-book-creator)
{% endcontent-ref %}