Yu-Gi-Oh! (meaning "King of Games") is the title of the first anime series based on the Yu-Gi-Oh! manga. The series is not connected in any way to the Yu-Gi-Oh! Duel Monsters series (known internationally as simply Yu-Gi-Oh!), which was made by Nihon Ad Systems and aired on TV Tokyo; both anime series are based on the same manga series. Fans of Yu-Gi-Oh! may use the fan name "Yu-Gi-Oh! A Game of Darkness" to refer to this show, or they may incorrectly use "Yu-Gi-Oh! first season" or "zero season" to refer to this show.