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Below is the complete list of Treasure Chest locations in the Uncharted Seas. There are 120 real Treasure Chests (containing items in them) and 2 fake ones (they are already opened and do not count as treasure chests in completion percentage) in the game Oceanhorn: Monster of Uncharted Seas.

# Location Sublocation Treasure Requirements Image
1 Hermit's Island Hermit's Hut Heart Piece The Master Key for this chest (obtained from Hermit)
Treasure Chest #1 Location.
2 Hermit's Island Caves Regular Key
Treasure Chest #2 Location.
3 Hermit's Island Caves Sword and Shield You need a Regular Key from the chest #2 to open the door to this chest.
Treasure Chest #3 Location.
4 Hermit's Island 10 Coins
Treasure Chest #4 Location.
5 Hermit's Island 5 Coins
Treasure Chest #5 Location.
6 Hermit's Island Sonson Cliff Rough Explorer Crystal
Treasure Chest #6 Location.
7 Withered Lands Golden Gear
Treasure Chest #7 Location.
8 Bomb Island 10 Coins You have to solve the Rusty puzzle (move it from its position) to make this chest appear.
Treasure Chest #8 Location.
9 Bomb Island Abandoned Mines - Tunnels Regular Key
Treasure Chest #9 Location.
10 Bomb Island Abandoned Mines - Depths Heart Replenishment
Treasure Chest #10 Location.
11 Bomb Island Abandoned Mines - Tunnels Old Boot You need to fight a Goblin to get a Regular Key from it, then open the door to this chest.
Treasure Chest #11 Location.
12 Bomb Island Abandoned Mines - Tunnels Regular Key You need to solve a puzzle with crates to get to this chest.
Treasure Chest #12 Location.
13 Bomb Island Abandoned Mines - Tunnels Master Key You need to put all four torches around the chest on fire to make it appear.
Treasure Chest #13 Location.
14 Bomb Island Abandoned Mines - Depths Heart replenishment You need to defeat the Cepedes of Abandoned Mines.
Treasure Chest #14 Location.
15 Bomb Island Abandoned Mines - Depths Bombs item The Master Key from the chest #13
Treasure Chest #15 Location.
16 Bomb Island Abandoned Mines - Depths
(left)
Rough Explorer Crystal Bombs (chests #16 and #17 stand next to each other)
Treasure Chest #16 Location.
17 Bomb Island Abandoned Mines - Depths
(right)
Rare Seashell Bombs (chests #16 and #17 stand next to each other)
Treasure Chest #17 Location.
18 Bomb Island Cave Heart Piece
Treasure Chest #18 Location.
19 Withered Lands Pirta Desert Beautiful Necklace You need to Bomb a wall to this chest.
Treasure Chest #19 Location.
20 Withered Lands Pirta Desert 2 Bombs
Treasure Chest #20 Location.
21 Withered Lands Pirta Desert 2 Bombs
Treasure Chest #21 Location.
22 Withered Lands Pirta Desert Heart replenishment
Treasure Chest #22 Location.
23 Withered Lands Rigger's Home Regular Explorer Crystal Trencher Boots
Treasure Chest #23 Location.
24 Great Forest Restless Grove Regular Key
Treasure Chest #24 Location.
25 Great Forest Restless Grove 25 Coins
Treasure Chest #25 Location.
26 Great Forest Forest Shrine - Outside 50 Coins
Treasure Chest #26 Location.
27 Great Forest Forest Shrine - Outside Regular Key
Treasure Chest #27 Location.
28 Great Forest Forest Shrine - Crypt Regular Key
Treasure Chest #28 Location.
29 Great Forest Forest Shrine - Crypt Master Key
Treasure Chest #29 Location.
30 Great Forest Forest Shrine - Tunnels Bow and Arrows Master Key from chest #29
Treasure Chest #30 Location.
31 Great Forest Forest Shrine - Tunnels Heart Piece You need to hit a target near this chest with Bow and Arrows to lower the water level.
Treasure Chest #31 Location.
32 Hermit's Island Great Chronicler's Grave Regular Key
Treasure Chest #32 Location.
33 Hermit's Island Great Chronicler's Grave 5 Bombs
Treasure Chest #33 Location.
34 Hermit's Island Great Chronicler's Grave Open and empty This is not a real treasure chest, because it is already open and empty.
Treasure Chest #34 Location.
35 Hermit's Island Great Chronicler's Grave Regular Key You need to Bomb a wall within which this chest resides.
Treasure Chest #35 Location.
36 Hermit's Island Great Chronicler's Grave Lost Store Cube of Archimedes You need to stomp on the blue Button to lower the bars around this chest.
Treasure Chest #36 Location.
37 Hermit's Island Great Chronicler's Grave Heart Piece
Treasure Chest #37 Location.
38 Tikarel Polished Explorer Crystal You need to hit a target a few meters to south-west of this chest with Bow and Arrows to make the chest appear; you will also need Trencher Boots to jump to this chest.
Treasure Chest #38 Location.
39 Tikarel Abandoned House (Tikarel Town) Bomb refill
Treasure Chest #39 Location.
40 Tikarel Abandoned House (Tikarel Town) Golden Gear
Treasure Chest #40 Location.
41 Tikarel Crayfish Cave Bag of Gold Bombs (to get inside the Crayfish Cave)
You need to solve a puzzle with crates to get to this chest.
Treasure Chest #41 Location.
42 Tikarel Crayfish Cave Rough Explorer Crystal Bombs (to get inside the Crayfish Cave), Trencher Boots
Treasure Chest #42 Location.
43 Gillfolk's Drop Rare Seashell
Treasure Chest #43 Location.
44 Skerry Beautiful Necklace Trencher Boots
Treasure Chest #44 Location.
45 Skerry Rough Explorer Crystal You need to Bomb a crate to get to this chest.
Treasure Chest #45 Location.
46 Old Fortress 10 Arrows Trencher Boots
Treasure Chest #46 Location.
47 Old Fortress Western Watchtower Regular Key
Treasure Chest #47 Location.
48 Old Fortress Abandoned Pier Bag of Gold
Treasure Chest #48 Location.
49 Old Fortress Direfolk's Hideout 20 Coins
Treasure Chest #49 Location.
50 Old Fortress Direfolk's Hideout Regular Key You have to stomp the left Button located to the right of the cells.
Treasure Chest #50 Location.
51 Old Fortress Direfolk's Hideout Beautiful Necklace (Chests #51 and #52 are next to each other; chest #51 is the right one.)
Treasure Chest #51 Location.
52 Old Fortress Direfolk's Hideout Rare Seashell (Chests #51 and #52 are next to each other; chest #52 is the left one.)
Treasure Chest #52 Location.
53 Old Fortress Abandoned Pier Regular Explorer Crystal
Treasure Chest #53 Location.
54 Old Fortress Abandoned Pier Heart Piece
Treasure Chest #54 Location.
55 Old Fortress Direfolk's Hideout Ice Spell The Master Key (obtained by defeating an Ogre)
Treasure Chest #55 Location.
56 Gillfolk's Drop Cavern of Fire Heart replenishment You need to Bomb a wall to this chest.
Treasure Chest #56 Location.
57 Gillfolk's Drop Cavern of Fire 5 Arrows
Treasure Chest #57 Location.
58 Gillfolk's Drop Cavern of Fire 3 Arrows
Treasure Chest #58 Location.
59 Gillfolk's Drop Cavern of Fire 5 Bombs
Treasure Chest #59 Location.
60 Gillfolk's Drop Cavern of Fire Regular Key Bombs, Bow and Arrows
You also need to solve a crate puzzle to get to this chest.
Treasure Chest #60 Location.
61 Gillfolk's Drop Cavern of Fire Old Boot
Treasure Chest #61 Location.
62 Gillfolk's Drop Cavern of Fire Beautiful Necklace
Treasure Chest #62 Location.
63 Gillfolk's Drop Cavern of Fire Fire Spell
Treasure Chest #63 Location.
64 Gillfolk's Drop Cavern of Fire 5 Bombs You need to put a torch down the stairs on fire with the Fire Spell to make this chest appear.
Treasure Chest #64 Location.
65 Gillfolk's Drop Frozen Palace - Main Hall Regular Key You need to thaw two crates by both sides of this chest with the Fire Spell and then solve a crate puzzle to make this chest appear.
Treasure Chest #65 Location.
66 Gillfolk's Drop Frozen Palace - Upper Wing Regular Explorer Crystal
Treasure Chest #66 Location.
67 Gillfolk's Drop Frozen Palace - Upper Wing Regular Key
Treasure Chest #67 Location.
68 Gillfolk's Drop Frozen Palace - Upper Wing Regular Key You need to melt the ice around spikes with the Fire Spell to get to this chest.
Treasure Chest #68 Location.
69 Gillfolk's Drop Frozen Palace - Upper Wing Regular Key You need to put three torches on fire - either with Bow and Arrows, the Fire Spell, and a flaming pot, or with the Fire Spell only.
Treasure Chest #69 Location.
70 Gillfolk's Drop Frozen Palace - Lower Wing Trencher Boots
Treasure Chest #70 Location.
71 Gillfolk's Drop Frozen Palace - Lower Wing Regular Key You need to solve a puzzle with a lever and an ice dragon statue to make this chest appear.
Treasure Chest #71 Location.
72 Gillfolk's Drop Frozen Palace - Main Hall Master Key Trencher Boots
Treasure Chest #72 Location.
73 Gillfolk's Drop Deep Cove Rare Seashell Bombs, Trencher Boots
Treasure Chest #73 Location.
74 Tikarel Heart Piece Bombs (to get through the Crayfish Cave), Trencher Boots
Treasure Chest #74 Location.
75 Great Forest Bloodstone
(open)
Trencher Boots
This is not a real treasure chest, because it is already opened and its "treasure" is exposed.
Treasure Chest #75 Location.
76 Riptide Reef Old Boot Trencher Boots
Treasure Chest #76 Location.
77 Riptide Reef 3 Arrows Bombs, Trencher Boots
Treasure Chest #77 Location.
78 Riptide Reef Master Key Bombs, Trencher Boots
You need to solve a Rusty puzzle and then Bomb the ground near the gravestone to reveal this chest.
Treasure Chest #78 Location.
79 Riptide Reef Rough Explorer Crystal Trencher Boots (to get here through the island), Master Key (to open the boss door to Sealork's corpse)
Treasure Chest #79 Location.
80 Riptide Reef Heart Piece Trencher Boots, Master Key
Treasure Chest #80 Location.
81 Southwind Isle Fine Explorer Crystal Bombs, Trencher Boots
Treasure Chest #81 Location.
82 Southwind Isle Heart Piece Bombs, Trencher Boots
Treasure Chest #82 Location.
83 Graveyard Island Regular Key
Treasure Chest #83 Location.
84 Graveyard Island Knight's Tomb - Crypt 200 Coins Bombs (Trencher Boots may come in handy)
Treasure Chest #84 Location.
85 Graveyard Island Regular Key You need to hit two switches to lower two bar rows to get to this chest.
Treasure Chest #85 Location.
86 Graveyard Island Rough Explorer Crystal
Treasure Chest #86 Location.
87 Graveyard Island Heart Piece
Treasure Chest #87 Location.
88 Graveyard Island 20 Coins
Treasure Chest #88 Location.
89 Graveyard Island Knight's Tomb - Crypt Beautiful Necklace Trencher Boots
Treasure Chest #89 Location.
90 Graveyard Island Knight's Tomb - Crypt 5 Bombs
Treasure Chest #90 Location.
91 Graveyard Island Knight's Tomb - Crypt 25 Coins Bombs
Treasure Chest #91 Location.
92 Graveyard Island Knight's Tomb - Crypt 5 Bombs
Treasure Chest #92 Location.
93 Graveyard Island Knight's Tomb - Crypt 25 Coins
Treasure Chest #93 Location.
94 Graveyard Island Knight's Tomb - Crypt 5 Bombs
Treasure Chest #94 Location.
95 Graveyard Island Knight's Tomb - Crypt Bag of Gold
Treasure Chest #95 Location.
96 Graveyard Island Knight's Tomb - Crypt Master Key You need to hit a switch to lower the bars which block this chest.
Treasure Chest #96 Location.
97 Graveyard Island Knight's Tomb - Crypt Cure Spell Master Key
Treasure Chest #97 Location.
98 Sky Island Grandmaster's Study Regular Key You need to solve a puzzle with Rusties and torches.
Treasure Chest #98 Location.
99 Sky Island Fine Explorer Crystal Trencher Boots
Treasure Chest #99 Location.
100 Sky Island 3 Arrows Trencher Boots
Treasure Chest #100 Location.
101 Sky Island Storm Shelter 10 Bombs
Treasure Chest #101 Location.
102 Sky Island Storm Shelter Regular Key You need to move Rusty one tile left from its position.
Treasure Chest #102 Location.
103 Sky Island Grand Core 10 Bombs
Treasure Chest #103 Location.
104 Sky Island Grand Core - Warehouse Sector Regular Key You need Trencher Boots to get to the Warehouse Sector, then solve a crate puzzle to open the door to this chest and then stomp on a Button to make this chest appear.
Treasure Chest #104 Location.
105 Sky Island Grand Core - Warehouse Sector Heart Piece Bombs
Treasure Chest #105 Location.
106 Sky Island Grand Core - Warehouse Sector 150 Coins Bombs
You need to hit a dynamo near this chest to lower the blocking bars around it.
Treasure Chest #106 Location.
107 Sky Island Grand Core - Showroom 10 Arrows Trencher Boots
Treasure Chest #107 Location.
108 Sky Island Grand Core - Showroom Regular Key You need to hit a target with Bow and Arrows to make this chest appear.
Treasure Chest #108 Location.
109 Sky Island Grand Core - Showroom 10 Arrows Trencher Boots
Treasure Chest #109 Location.
110 Sky Island Grand Core - Showroom Shield of Chronos A Regular Key to open the door to this chest.
Treasure Chest #110 Location.
111 Sky Island Grand Core - Cooling Hall 5 Bombs You need to stomp a button to raise water level to get to this chest.
Treasure Chest #111 Location.
112 Sky Island Grand Core - Cooling Hall Mana Pot You need to stomp a button to raise water level to get to this chest.
Treasure Chest #112 Location.
113 Sky Island Grand Core - Cooling Hall Golden Gear You need to stomp a button to raise water level to get to this chest.
Treasure Chest #113 Location.
114 Sky Island Grand Core - Cooling Hall Master Key You need to place a barrel on a button in the Maintenance Sector to make this chest appear.
Treasure Chest #114 Location.
115 Sky Island Grand Core
(left)
10 Arrows Master Key, Bombs, Trencher Boots
Treasure Chest #115 Location.
116 Sky Island Grand Core
(right)
10 Bombs Master Key, Bombs, Trencher Boots
Treasure Chest #116 Location.
117 Home Island 50 Arrows
Treasure Chest #117 Location.
118 Home Island House Toy Soldier
Treasure Chest #118 Location.
119 Home Island - Swimming Spot Superb Explorer Crystal
Treasure Chest #119 Location.
120 Arcadia Ruins 10 Arrows
Treasure Chest #120 Location.
121 Arcadia Ruins Fine Explorer Crystal
Treasure Chest #121 Location.
122 Arcadia Ruins White City Underground Golden Gear
Treasure Chest #122 Location.


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Game Items
Hero's Equipment Wooden StickFather's SwordFather's ShieldBombsBow and ArrowsTrencher BootsCoral SaberShield of ChronosAncient FlutePumpkin Seed Gun
Spells Force SpellFire SpellCure SpellIce SpellTriloth Spell
Emblems Emblem of EarthEmblem of OceanEmblem of Sun
Restorative Items HeartArrowsBombsMana PotManaBomb RefillArrow Refill
Keys and Quest Items CoinHeart PieceHeart ContainerBloodstoneTreasure ChestRegular KeyMaster KeyLost Store Cube of ArchimedesToy SoldierMother's NecklaceHoney
Cursed Skull
Treasure Items 5 Coins10 CoinsRough Explorer CrystalRegular Explorer CrystalFine Explorer CrystalPolished Explorer CrystalSuperb Explorer CrystalOld BootBag of GoldGolden GearBeautiful NecklaceRare Seashell
Item Lists BloodstonesTreasure ChestsHeart Pieces
Cursed Skulls