A Shaow Game, or Game of Darkness ("Yami no Game," literally "Game of Darkness" or "Dark Game") as it is known in the original Japanese, in the manga Yu-Gi-Oh! and the two anime series, the first series Yu-Gi-Oh! anime and Yu-Gi-Oh! Duel Monsters (internationally simply known as Yu-Gi-Oh!), is a contest generally between two people that involves a harsh penalty for the loser (permanent loss of vision, death, forfeiting his/her soul, etc.). The Singaporean anime refers to the games as "Games of Darkness." Usually, the person who invokes a Shadow Game has some form of psychological advantage, while the person being challenged must overcome a personal obstacle or weakness to win. All shadow games are possible for the person challenged to win. In the English anime, the Shadow Realm takes care of seeing to that, even if the challenger tries to rig the game.