NFT Marketplace: trade and income

This is the marketplace for buying, selling, and trading in-game items between players. In addition to basic trading, the following features are available:

• DeFi Staking — earn rewards by holding NFTs.
• Item Rental — temporary use of equipment.
• Pawn Shop — collateralize items for loans.
• Auction — bidding on rare and valuable NFTs.

These functions allow players to maximize their assets and earn additional income.