Ancient Fortress is a multiplayer stage in Kid Icarus: Uprising. It appears to be ruins of a fortress built on a mountain top, several pillars and large bits of rubble are situated in the center of the map and castle like ruins can be found towards the back of the map. Players can go inside the ruins to avoid enemy fire or find a suitable sniping position, but the area is fairly open. So in most cases, players are just as vulnerable in the ruins as they are on the field. A green jump pad is located in front of the fortress, and two pink jump pads can be found near the edges of map.
In this battle the Light Team will spawn in the fortress and the dark team will spawn outside. The light team should focus on defending the fortress and preventing the dark team from breaching it and. While the dark team should focus on getting into the fortress and take over.