> For the complete documentation index, see [llms.txt](https://docs.nftduel.net/nft-duel/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nftduel.net/nft-duel/card/collection.md).

# Collection

A Collection is the name of a series of cards collaborating with various brands and characters. For Example, there is an anime series called "A" or an artist series called "B."

![NFTDUEL Card / ULTRAMAN](/files/WY59G9MNw9l31qDdb4lM)