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

# Collectibles NFTs

## 1.Time Coupon NFTs

<figure><img src="/files/clnSkl2YuGiYMPU2nwl6" alt=""><figcaption></figcaption></figure>

Time Coupon is one of the digital goods in the Orbcity ecosystem. Users can burn Time Coupons to reduce the amount of time required in-game. Time Coupon is used to Building NFT evolving, level up, District Minting and etc. Since used Time Coupons are burned, it inherently contains a constant level of circulating supply and value. It's given to users via Laybouring or campaigns. It can be sold on the marketplace or used in-game for a better gaming experience.