From the Steam Store page:
Broken Age is a family friendly, hand-animated, puzzle-filled adventure game with an all-star cast, including Elijah Wood, Jack Black and Masasa Moyo. Funded by a record breaking crowdfunding campaign and designed by industry legend Tim Schafer, Broken Age is a timeless coming-of-age story of barfing trees and talking spoons.

Vella Tartine and Shay Volta are two teenagers in strangely similar situations, but radically different worlds. The player can freely switch between their stories, helping them take control of their own lives, and dealing with the unexpected adventures that follow.