Planet IX is made up of more than 1.6 billion hexagonal land parcels called PIX, which are ERC 721 assets that players can trade and develop into Territories in order to create value. Based on real-world attributes and geographical rarity, the game includes five tiers of PIX, ranging from Capital City Centers to Deserts and Mountains. PIX and territories can be traded in the in-game NetEmpire marketplace: https://planetix.com/