Jamanakai Village is a small town on the island of Ninjago, near the Mountains of Impossible Height. It is situated on the side of a large mountain, bustling with many hard-working citizens. The village is home to the Jamanakai Village Inn which is heavily advertised in Ninjago City.
The village has been a location of great conflict. The first battle of the first Serpentine War was fought there and Lloyd attacked the village when he released the Serpentine. During the second Serpentine War, Jamanakai was one of the first villages to be conquered by Chen's army.
The first battle of the Serpentine War took place in Jamanakai, with the village falling under attack by the Serpentine. The Elemental Masters of Light, Water, Fire, and Gravity defended the townsfolk from the invading snakes until the unstoppable Anacondrai arrived to aid the other Serpentine. The Elemental Masters were quickly overwhelmed by this foe and were forced to retreat.
The Serpentine took over the village, but were pushed out of it later in the war. After a disastrous battle in Birchwood Forest against the Anacondrai, the Elemental Alliance retreated to Jamanakai. It was there that Garmadon observed a flute play entrancing a snake, thus giving them the idea of the Sacred Flutes, which were used to end the war and lock the Serpentine away in tombs.
After Sensei Wu sees Serpentine activity via Spirit Smoke, he warns the Ninja that the Serpentine are loose. They try to dismiss the alert, but eventually find themselves in Jamanakai Village once more. They start fighting the Hypnobrai, and Cole is hypnotized by Skales. They give the villagers the anti-venom, and go back to the Monastery.
Lloyd and Pythor are seen in Jamanakai Village pulling pranks such as taking candy from babies, knocking down two kids' sailboats, and stepping on grass despite a sign that states otherwise.
A group of small children were playing ball in the village square as the Destiny's Bounty was flying by.
When Lord Garmadon began bombarding Ninjago with Dark Matter fired from the Garmatron, Jamanakai Village was the victim of his second shot. When the Dark Matter corrupted the village, the balance between Light and Darkness was undone, allowing the Overlord to begin manifesting in the world once more.
Jamanakai Village was the first place attacked by Chen's forces when the Second Serpentine War began, after Lloyd prevented one of Chen's trunks from entering it via a bridge.
As the village burned, Chen landed in the Roto Jet as two Condrai Crusher's pulled up. One of village children attempted to attack him, but Zugu quickly sent the boy into retreat. Meanwhile a distress message was sent to Nya informing her that the village had been taken over, though due to the Elemental Masters being scattered, no one was able to come to the village's aid.
- A level in LEGO Ninjago: Wu-Cru is set in Jamanakai Village.