Games Abyss: "Gameplay is the pretty standard tap to control mechanics of other games of this genre. Playing as Ethan Kairos, a 17-year-old high school student gifted and cursed with the 'hollow pen.' The hollow pen allows him to open holes in time – a process the game refers to as "digging" – in order to make changes to the past and change the present. Players move Ethan from place to place using a map and examine locations for clues to help him interpret rifts in time. Players must examine an area, converse with characters, and find clues to interpret what point in time he must return to. His pen won't work until he finds all the clues, and often the player will find themselves a few steps ahead of Ethan."