Official description from digital stores:
Help Steven and Connie save the Crystal Gems from the pages of an ancient book!
ASSEMBLE THE TEAM
Rescue Garnet, Pearl, and Amethyst to add them to your team. Each Gem has a unique move that can be used to solve puzzles and defeat enemies.
GESTURE DRIVEN COMBAT
Battle in real time! Draw symbols on screen to summon awesome attacks and abilities. Knock out enemy gems and bubble them before they have a chance to regenerate.
HIDDEN SECRETS
The Gems must face their deepest fears as they are confronted with twisted memories from Gem history. Explore each chapter to uncover the truth behind the mysterious book.
G.U.Y.S. & G.A.L.S.
Onion’s toys have gone missing. He needs your help to find them. Collect all 20, including Explorer Gal, Dave Guy, Hard-Hat Gal and, of course, Ranger Guy!
ORIGINAL VO
The Phantom Fable features original voice over from the cast of “Steven Universe.”
The Phantom Fable – Steven Universe