This is done in the order " Unlock the main line of the five islands, Campfire – each island, in a hierarchical manner, to check the surrounding maritime areas and the Ruins leaks." First follow the P route, and then counter-check the collection type when only a few items are missing.
Updates:2026-08-24Applied: August 2026.Cover: Five Islands, Ruins and the surrounding maritime areas
Index of sub-islands, sub-regional routes.Hidden Sea Exploition Collection; pages are sorted with their public P heading and running access.Another more detailed line of dragons. The video cover source: " Lazy Yang's Game " , by B.Hidden Sea map explores a dragon; cross-checking when first route missing is appropriate.
Official Unlock Conditions
Finish Chapters 3 and 4, reach level 31 and follow Kusi to Statue Island
1
“Bridge Crossing Island”, chapter III of the captain's mission.
2
Return to Orbtopia and complete Chapter 4, Unexpected Visitor, before preparing to sail.
3
Raise the Sailing Group level to 31 or more.
4
Following the mission guide of Kusi, the first break-through of the Statue Island storm ring and landing took place.
I don't want to have a week's access to customs. Officially, the challenge of completing only White Sand Sea and Bridgewater Sea can also be cleared for the Forgotten Voyage. If grade is not sufficient, continue the main course without stopping the entire account number for Hidden Sea.
Recommended Full Collection Order
Suggested collection order
1
Clear the main line first: To land with Kusi Staue Island, complete the task of opening the area, Ruins or interacting with it.
2
Campfire: Record landing points, Cave entrances, Ruins entrances and, most recently, Teleport Point, to reduce the number of reruns when filling leaks.
3
One at a time: Treasure Chest, then Owl, Mouse Puzzle, honey and Prank Door, and avoid icon stacking.
4
Separate treatment of stratification: The surface, underground, Cave and Ruins are completed separately; the same plane coordinates do not represent the same collection point.
5
Last look at the surrounding maritime areas: Once completed, the island will be cleared of the surface, the sea, the Powerful Enemy and on its way to the sea, avoiding any confusion with the number of people on the island.
The Fifth Island Route.
Check each island’s quests and map layers
Statue Island
Main island and first landing
Chapter 4 and Kusi’s Wish
Memory Resonance and statue interactions
Coastal Turmoil and A Son’s Gift
Ruins, island bosses and roaming quests
Unlock the main route and nearby campfires first. Then clear the village, coast, ruins and surrounding waters in separate runs.
Jungle Island
Plant puzzles and elevated routes
Where Are the Magical Plants?
Annoying Birds and The Lost Item
Mad Old Murray
Mysterious Jellyfish in the nearby waters
Vegetation and elevation changes hide entrances. Make separate passes for quests, chests and puzzles.
Stream Island
Riverbanks and trials
Brave Heart
Family Heirloom, Ancestors’ Choice and Song of Courage
Red Narcissus profession legacy
Streams, water and high ground
Follow Brave Heart through the main route, then check the banks, high ground and quest interactions.
Insect Island
Outlying island and nests
Island chests and puzzles
Treasure-Hunting Cat-Owls and mead
Fireworks Wanderer materials and cannon intelligence
Powerful foes and encounter prerequisites
Sweep in one direction from the landing point. Check the surrounding waters after finishing the island.
Wine Cavern
Cave entrance and interior
Shima and His Drinking Companion
Surface and cave entrances
Mead, chests and hidden items
Fireworks Wanderer materials and cannon intelligence
Check the active layer. The same position can point to different collectibles above and inside the cavern.
Directly Opened P Routes
Jump to the video chapter for each island
The following is a public p heading and length of the collection of "The Little Fat Dragon " . The first collection is done in the order of the islands; when there is only one missing, then cross-checking with the classification route " Lazy Young-goose " .
Insect Island
1 P, approximately 5:54; minimum size suitable for first familiarization with the rhythm of “seeing video - pause - pick-up records”.
Case — collectibles still missing after a Stream Island run
Confirm that all four paragraphs have been read: Beach under 6P, Middle Area 7P, Upper Area 8P, Ground Cave under 9P and Cave.
Recheck the missing entries by type, instead of re-reading the entire hour video: first Treasure Chester, then Owl/Middlem, then task or hide.
If the plane is identical and not interactive, then go back to the 9P Platoon Cave; the banks, highlands and Cave cannot be judged by two-dimensional coordinates alone.
Do not focus only on "99 Treasure Chester": Different routes may divide Cave, tasks and surrounding maritime areas into different sections. When you follow the 9P, priority is given to the Cave layer and task collection and not to run from the 6P section as a whole.
Case — save progress between Statue Island runs
Only two to three points of P at a time, with the nearest Campfire or a clear landmark as the end point.
The Parts 23–26 is the Ruins route, which establishes a separate list of "Statue Island Ruins" and does not mix it with the surface Treasure Chest.
After completion of the 30th P, look at the 31st P gift point, 32nd P surface collection and 33rd-34P patches.
For each record completion date, sub-P, final landmark and non-completed type; continue directly from the next paragraph the following day.
Executable results: Dismantling the “Statue Island Collection” into five small tasks: surface, Ruins, gift, surface and leaking, is more difficult than running for hours.
Collections are missing.
Find what is missing, then check the layer
Collection Type
Leaking method
The easiest place to leak.
Chests
Check the island, caves and ruins. At the marker, look for a dig prompt or an object you can interact with.
Cave layer, ruins layer, quest-gated areas
Treasure-Hunting Cat-Owls
Check the layer and camera direction before following the route.
Elevation, obstructions and viewing direction
Mouse Puzzles
Complete nearby quest prerequisites, use each mechanism in order and check that the puzzle state changes.
Quest prerequisite, mechanism order and final interaction
Mouse Mead and Sweet Mead
Mark each island and route segment separately. If names vary across guides, match the location and icon.
Repeated video entries and alternate names
Mischief Doors
Follow the route numbers in order. Note the island and nearest campfire before entering.
Underground entrances and unmarked completions
A Gift from Long Ago and stone monkeys
Advance the area quest and island boss challenge, then return to check for the interaction.
Quest prerequisites and separate quest rewards
The totals don't match.
Check by region and collectible type
We'll find out what kind of leak, then we'll find a specific location.
First finish the surface routes of Staue Island, Jungle Island, Stream Island, Insect Island and Wine Cavern;
Clear Cave alone with Ruins and not treat the same plane position as the same point;
(b) Subsequent refilling of the surrounding maritime areas, mission awards and projects requiring pre-requisite interaction;
Last checked by Treasure Chest, Owl, Mouse Puzzle, Preck Door, by class.
The totals in the video may have different groups for the ocean, Ruins, or mission rewards, so that the inconsistent totals do not necessarily mean missing.
FAQ
Hidden Sea collection FAQ
How do I unlock the Hidden Sea?
Complete Captain Chapter 3, Bridge Crossing Island, and Chapter 4, Unexpected Visitor, in Orbtopia. Reach Sailing Group level 31, then follow Kusi’s Wish through the storm ring to Statue Island.
Does the first voyage require Hidden Sea collectibles?
The July 30 patch confirmed that the White Sand Sea and Bridgewater Sea challenges are enough to finish Forgotten Voyage. Explore the Hidden Sea separately for quests, collectibles and upgrades.
How can I tell which collectible is missing?
Check each of the five locations, then their caves and ruins, surrounding waters and quest rewards. Routes group these points differently, so compare entries and layers in addition to totals.
To screen the target points by island, floor and type of collection, to record the progress of exploration and to view the remaining collection targets.