Inspired by Wall-E and Hitchhikers Guide to the Galaxy, Grow Home is a new game from Ubisoft that tells the story of BUD (Botanical Utility Droid) on his intergalatic jouney searching for oxygen for his home world. He finds a "Star Plant" (think giant beanstalk) that becomes the world of the game as it grows: "you’ll find yourself traveling through a series of floating islands and crafting your own playground in the sky. As you ride branching vines through the air, you’ll be shaping your own unique world, exploring new locations, and encountering strange plants and animals."
The goal seems to be to help your plant grow into the sky so that you can harvest its seeds, but the growing plant also acts as levels in the game, allowing you to create and explore within it.
Grow Home comes to PC on February 4, 2015. Learn more here.