Humanity trashed the Earth and left for Mars. Only few remained. Explore the world. Clean the environment, Craft with recycled resources. Domesticate animals. Rebuild your village. Restore environment and run your own post-apo farm as there is 'No Place Like Home'!
Stuck and need some help? Check out some of the questions the community have asked relating to this game. If none of these answer your problem or you want to get some tips when it comes to a particular level, feel free to submit a question of your own.