The Oceania title screen, with an animated pixel-art island and reef behind the menu

**Oceania turns the Overworld into one endless ocean.** There is no other world type. Every new world is a deep sea dotted with small tropical islands, and you spawn standing on a houseboat with no land in sight. Build on the boat, sail it between islands, trade with the hut villages, dive for what the sea floor holds, and go deeper than vanilla ever let you.

A hut village on a jungle island at golden hour, seen from above

--- ## The world

A wooden dock over turquoise shallows, with huts on the beach behind

Three kinds of island rise from the sea. Big jungle islands with wide sand beaches and the villages. Basalt volcanoes, half of them with a lava lake in the crater. Small sandy atolls with the odd cactus. Jungle is the only tree that grows, and farm animals live only on the jungle islands. There is no snow or ice anywhere.

Looking down into a lava-filled volcanic crater of basalt columns

The sea floor is a landscape of its own: trenches, ridges, seamounts, abyssal plains, kelp forests and flooded blue holes. Hydrothermal vents push bubble columns toward the surface, and iron, copper, gold and the odd netherite block lie loose on the abyssal floor. The sea goes far deeper than vanilla, and water colour follows real depth, from turquoise over sand to navy over the abyss. Underwater, the fog thickens with depth and the sky fades out a couple of dozen blocks down.

A reef seen from just below the surface with an island above the waterline

Under the sea bed the caves are sealed and dry: dripstone, lush caves and the deep dark, with geodes, dungeons, fossils and ore veins. Ancient cities, trial chambers, strongholds and mineshafts are all down there, and the eye of ender still finds the stronghold. Shipwrecks, ocean ruins and monuments still generate, and pillager outposts and trail ruins stand on small islands. Ruined portals, buried treasure and treasure maps are gone. Wreck and ruin chests hold diamonds instead.

A sunken stone ruin in the underwater fog

--- ## The houseboat

A houseboat deck at a village dock at dusk

Craft a houseboat from five logs around any boat or chest boat. The wood of the boat sets the deck, so there are nine kinds. Use it on water and it places a helm on a three by three deck.

Crafting a jungle boat from planks, then a houseboat from five logs around it

Then build on it with any block, up to 32 by 32 by 16. Chests, furnaces, crafting tables, doors, torches and beds all work, and furnaces keep smelting while you sail. Sleep on board and that bed is your respawn point wherever the boat goes. Sit at the helm to drive. Top speed is the same whatever the size, and the boat stops against anything solid and slides along a shore rather than turning into it. Drops land on the deck, and anything that goes overboard floats. Several players can ride at once, each at their own helm, and the boat stays where it is when its driver logs out. The helm and the nine deck blocks under it are one piece. Mine the helm and the whole houseboat comes up as a single item, while every other block drops and containers spill. Using a houseboat item on an existing deck adds a spare helm.

Placing a houseboat, building on its deck with planks and a chest, and driving it from the helm

The deck is a normal build surface. Place and break blocks on it while it moves, walk its edges, take the helm and the whole build goes with you.

--- ## Villages and trade

Thatched huts on a grassy hill above the sea

Each large island carries a hut village with a dock and a boat shed, built from more than twenty hand-made hut designs. Nine professions have been rebuilt around island life: Fisher, Boatwright, Weaver, Pitkeeper, Seedkeeper, Wayfinder, Chant-keeper, Shaman and Shellworker. Many trades are rolled per villager, so two Seedkeepers do not sell the same saplings.

The Boatwright trade screen The Shaman trade screen

The islands grow only jungle, so the things they cannot give you are trades: saplings for every other tree, a spyglass, mushrooms, water breathing, a turtle shell. The Wayfinder sells a Wreck Chart and a Ruin Chart for a compass and emeralds, and a plain Chart of These Waters.

Inside a village hall, with beds, chests and decorated pots

--- ## Creatures

A shark in open water

**Sharks.** Reef, bull, tiger and great white, by biome, hunting near the surface. They circle, wind up with a warning, then charge. Blocking during the wind-up works, leaving the water ends the hunt, and the deck of a houseboat is safe.

A blue whale passing through a kelp forest

**Blue whales.** Life-size, in pods, far from land. They surface to blow and sing with real hydrophone recordings.

A giant squid in the deep

**The giant squid.** Lives in trenches and abyssal plains far below the surface, hunts players and whales, and will drop an unarmoured player in one hit.

Glowing jellyfish drifting through kelp and coral

**Jellyfish, crabs and gulls.** Moon jellies, sea nettles and crown jellies drift in neon colours, harmless and common in the deep. Coconut, reef and king crabs scuttle sideways and run from you. Seagulls never land and gather over islands, so follow the gulls to find land.

A king crab on basalt columns

Drowned only gather around monuments, wrecks and ruins. Dolphins are back. --- ## The deep and the turtle set

Kelp and jellyfish in the abyssal fog

Vanilla gives you the turtle shell. Oceania completes the set: a Turtle Chestplate, Leggings and Boots crafted from scutes, with iron-level protection. Each piece worn doubles your air underwater. With all four on, mining underwater is mining on land, with no penalty for being submerged or afloat.

Crafting the turtle shell, chestplate, leggings and boots from scutes

--- ## Night, weather and the surface

A reef under the moon at night, lit by torches on a houseboat

At night, players, boats, sharks and whales leave glowing bioluminescent trails on the surface. Rain and thunder follow their own schedule, and storms darken the water. The main menu shows an animated ocean instead of the vanilla panorama.

Rain on a houseboat deck in open water

--- ## Settings The Configure button in Mod Menu, or `config/oceania.json`, switches natural spawning of sharks, whales, giant squid, jellyfish and crabs on and off. Spawn eggs and `/summon` still work. The settings of whoever hosts the world apply to it, and a dedicated server uses its own file. ## Requirements and notes - Minecraft 26.3, Fabric Loader and Fabric API. Mod Menu is optional. - Oceania replaces the world type. It needs a new world, and once installed every new world is an ocean world. - Played and tested with Sodium, Iris, Indium, Lithium and ModernFix. - Screenshots were taken with the Packtrix resource pack and AstraLex shaders. The water colour, underwater fog and bioluminescence are the mod's own and show without shaders. All rights reserved. By Meatylumberjack.