Join Billy and his inverse, Yllib, as they traverse through a dark mirror world in order to help Billy return home. Light is your friend, and sadly it is in short supply here. Vision is one of the things that the two boys will need to learn to share as they make they collect the shards of the mirrorEndure difficult platforming and puzzle challenges that have you controlling both Billy and Yllib Simultaneously in order to reach the endCollect the shards of the broken mirror on this side in order to fix the mirror on the otherThe controls to the game are simple, you can move, jump and distribute your light between the two boys. They share a total pool of light and move simultaneously, making it necessary for you to learn how best to stay alive, and navigate through the increasingly difficult levels.