The Queen's Domain Ancient World is reached through dome-shaped buildings with a triangle on top that teleport you between islands, and it holds Siraatsu Castle, the Record of Sin and the Tower of Sin. Getting through it needs three things in order: the Blue Seal Breaker and Shock Rifle from the underground lab, the blue key that opens the three pyramid power towers, and then the rifle used on those towers to open the big bridge to the castle.
The dome buildings that teleport you
The Ancient World is entered and moved around through dome-shaped buildings with a triangle on top. Walk the loop of the hallway inside one and it spits you out at another spot, and one of those paths puts you just beneath the isolated tower.
They are the region's transport network, and the loop is worth memorising before you try to leave anywhere in a hurry — being dropped somewhere inconvenient is a normal outcome, not a bug.
Two seal breakers come from here and nearby:
- The Orange seal breaker comes from a scientist not far from the fast travel point.
- The Cobalt one is in a cave reached through the teleporter shack near the professor. Go through it once counter-clockwise, then at the top of the cave do not airdash across the ravine — turn left to the busted fence instead.
The Green Seal Breaker is not in this region. It is on the rooftop of the Deimpo Mausoleum.
The lab with the rifle and the blue seal breaker
You need the Blue Seal Breaker and the Shock Rifle, and both are in the underground lab of the house with the overgrown eyes and the deer outside it — the house you reach through the teleport buildings. The rifle is lying right next to a skeleton down there.
That lab is also where the Shock Rifle and the Blue Seal Breaker are marked on bestiary entry No. 98, behind a hidden wall in the room you drop down into from the vents. Hidden rooms like that are in the secrets guide.
The fifth Wind Gem is hidden inside a cavern shrine in this region, and you need all five air dashes to reach one of the pyramids unless you use the Cestus plus three.
Queen's Domain Ancient World: the three pyramid power towers
The three blue pyramid power towers are the region's spine:
- The blue key opens them.
- The Shock Rifle disables their power.
- With all three offline, the big bridge to the castle opens.
The rifle works on a node graph: shooting a node lights up the nodes it is linked to, and the key is the endpoints — the nodes linked to only one other node. That puzzle has its own guide because the third tower is genuinely fiddly, and it is in the electricity puzzle guide.
The Cestus is worth buying from the shop once you are here, because its small height bumps make the platforming between the islands much easier.
Siraatsu Castle and the Record of Sin
Siraatsu Castle has three bosses that all have to die before the doors to the final boss open. They drop nothing, and the seals that gate the castle are separate from the bosses entirely — so killing all three does not open the seals.
Inside the castle:
- The second-floor left corridor needs the staff seal breaker and holds the dining hall with the sword-seal door.
- The note at the bar points you to the kitchen storage room, which holds bestiary entry 122 behind a sword-seal door on the second floor's left corridor.
- The Cosmic Bone, number 124, is behind a secret wall off the halls of despair checkpoint.
The Record of Sin must be entered from the Ancient World. Go behind the tower, round to the corner onto the ledge, jump down and pick up the teleporter in the closer room.
The Tower of Sin has two entrances. One is from Verdant Hollow, through one of the huge bridges. The other is from the Ancient World: at the highest of the three blue signal towers, or the one to the right of Siraatsu Castle, jump the gap behind the tower and drop straight into the basement — clear the puzzle there and you are in the Tower of Sin proper.
The three castle bosses and the Record of Sin dragon are in the bosses guide.