Planet Earth is a great survival map with several built-in survival challenges. You will start out on the surface of a planet which include just one house but with a lot of trees and other areas to explore both on the surface and in the core of the planet. Once you’ve built a stable society it’s time to explore the space beyond and use whatever resources you come across.
The secret island is very far from the main planet. That’s why you need to collect lots of resources before being able to go there. But once you do get there you will find hidden treasures and even some animals which you probably can find some use for.