Decentraland (MANA) is basically an ethereum token that is used to empower the 3D virtual reality platform referred to as Decentraland. The currency, MANA token, can be used to buy virtual plots of land in Decentraland as well as other in-world items and services.
Players or users could also create and monetize their content and applications. Decentraland is based on the Ethereum blockchain, it aims to create a network where its users would be able to have the best immersive experience by exploring the LAND owned by other users and connect with them, experience scenes and structures, and commerce their virtual assets.
To explain more about its gameplay, each user has a space which they can interact with known as "LAND". It is a finite and transferable 3D virtual space which users can buy, making it permanently owned by them. The user then can choose whatever they want with their LAND, whether it may be creating applications, games, or dynamic scenes.