The International One Night app is designed to be used in primarily non-English-speaking countries with the One Night Ultimate Werewolf, One Night Ultimate Daybreak, One Night Ultimate Vampire, One Night Ultimate Alien, and One Night Ultimate Super Villains party games published by Bezier Games, Inc. You will need one of these games in order to take advantage of the app. This app automates the night time narration based on the roles in your game, and provides a timer that can be used for the day phase of the game.