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

# Introduction

Players, by spending free gold coins which are gifted on a daily basis, can use Cannon NFT to shoot marine creatures in order to earn MMG tokens.  Cannon NFT varies from 1-star to 8-star. Higher level of NFT earns more rewards. Additionally, with daily check-in rewards, players can fully cover the cost of their NFTs, not to mention additional P2E rewards.

 

Every Cannon NFT has a life cycle. When the NFT expires, players can either synthesize it with MMC or sell it on the secondary market; this solves a deep problem in many GameFi games: inflation. The MMG team is committed to creating a long-term sustainable ecosystem that allows players to enjoy the game while being entertained and profitable at the same time.