LAND is a smart contract token implementation of EIP-721 (for non fungible, unique tokens) where each token represent a portion of Land on our 3d voxel world.
Each land is placed on a 2d plane composed of 408x408 = 166464 Land token.
The contract has been optimized to permit the creation and transfer of a relatively large amount of land at the same time. We use a quad tree representation to achieve that.
See Land.sol
An Audit was performed by Certik : see ./audits/land_landsale_with_eth_certik_audit.pdf