|Secret Technique: Summoning: Mugen Castle|
|Rōmaji||Hijutsu: Kuchiyose: Mugen-jō|
|Literal English||Secret Technique: Summoning: Infinite Phantasm Castle|
|Games||Hidden Jutsu: Summoning: Mugenjo|
|Game||Naruto: Ultimate Ninja Heroes 2: The Phantom Fortress|
|Appears in||Game only|
|Classification||Hiden, Ninjutsu, Space–Time Ninjutsu, Cooperation Ninjutsu|
A technique created by Orochimaru. Kabuto uses eight seal tags to summon the Mugen Castle. The castle can absorb the people's vitality and capable of also destroying the land where it stands. When the castle is destroyed by removing the eight seal tags, it dissapears without a trace.