> For the complete documentation index, see [llms.txt](https://ovo-nft-platform.gitbook.io/ovo-platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ovo-nft-platform.gitbook.io/ovo-platform/ecosystem/picturebook.md).

# PictureBook

PictureBook is a collectible system developed by OVO to enhance the entertainment value of NFT content. Users can collect specified NFT content through PictureBook to obtain rare NFTs that cannot be obtained through the issuance system and marketplace.

Additionally, there are plans to users can earn Energy every time they claim a rare item in Picture Book.