"The companion app for the Ravensburger card games Werewolves Full Moon Night, MorgenGrauen, Vampire Twilight, Epic Battle, Harry Potter - Fight against the dark forces for 3 to 10 people, ages 9 and up, and Werewolves - Night of the Young Wolves for 2 to 6 people, ages 6 and up . Danger! Can only be used in conjunction with Ravensburger card games! Werewolves Full Moon Night, MorgenGrauen, Vampire Twilight and Epic Battle from Ravensburger offer fast fun with lots of variety. If you combine s