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Neoforge Mods for Minecraft 1.21

Browse 53 free Neoforge mods for Minecraft 1.21 — popular picks include YUNG's Better Caves (Forge/NeoForge), Aquamirae, Ocean Floor - Clay Sand and Dirt.

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YUNG's Better Caves (Forge/NeoForge)
1.20.1forge

YUNG's Better Caves (Forge/NeoForge)

Overhauled cave generation, underground lakes and rivers, lava oceans, and more!

56Mdownloads
Aquamirae
1.21.1neoforge

Aquamirae

Ship graveyard with terrible deep sea creatures!

9.8Mdownloads
Ocean Floor - Clay Sand and Dirt
1.21.1neoforge

Ocean Floor - Clay Sand and Dirt

Spawns patches of Clay, Sand, and Dirt, within the Deep Dcean layer of boring gravel

8.9Mdownloads
Underwater Village - Oceanic Structures
1.21.11neoforge

Underwater Village - Oceanic Structures

Discover a lot of new oceanic structures!

4.7Mdownloads
FTB OceanBlock 2
1.21.1neoforge

FTB OceanBlock 2

Nothing but endless ocean. No land. No rescue. You’re alone - or so you think...

1.4Mdownloads
Ocean World Dimension
1.21.1neoforge

Ocean World Dimension

Explore an endless ocean in the Deep Sea dimension!

615kdownloads
Aquatic  Additions
1.21.10fabric

Aquatic Additions

Aquatic Additions completes the vanilla turtle armor and adds an upgraded version to enhance underwater exploration

506kdownloads
Create: Stranded at Sea
1.21.1neoforge

Create: Stranded at Sea

An ocean survival, centered around create automation, adventure, and a fully integrated economy system.

295kdownloads
Unnamed Sea
1.19fabric

Unnamed Sea

Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.

259kdownloads
[HUGE UPDATE] Fisherman's Haven
1.21.1neoforge

[HUGE UPDATE] Fisherman's Haven

A huge expansion for fishing and ocean exploration in Minecraft!

193kdownloads
Sky Archipelago
1.21.1neoforge

Sky Archipelago

Sky Archipelago adds a new floating-islands world generation. High degree of configurability, such as island density, sizes, Y-spawn heights, ocean or void and much much more!

170kdownloads
Aetherial Islands
1.20fabric

Aetherial Islands

Datapack that creates a whimsical floating islands world, with mountains, rivers, and floating ocean bowls!

112kdownloads
One Survival Island
1.20fabric

One Survival Island

Datapack that creates a Single Survival Island in an Infinite Ocean World

102kdownloads
Better Cave Worlds
1.20fabric

Better Cave Worlds

Datapack that creates Cave Worlds, based on the old preset, featuring all biomes, ocean caves, and most structures.

56kdownloads
Revamped Floating Islands
1.20fabric

Revamped Floating Islands

Datapack that creates Floating Island worlds based on the old preset, with all biomes and structures. Additionally featuring floating oceans and rivers.

44kdownloads
No More Ocean Monuments
1.19fabric

No More Ocean Monuments

Removes ocean monuments from the world generation.

43kdownloads
Temperature Bands
1.19.2forge

Temperature Bands

Modifies world generation to place biomes into repeating temperature bands. Compatible with most worldgen mods. Now with humidity based on proximity to river and/or ocean too!

26kdownloads
Deep Waters
1.21.1neoforge

Deep Waters

mermaids dimension

14kdownloads
Fish Fix
1.21.1neoforge

Fish Fix

Amends hardcoded sea level assumptions to fix aquatic mob spawning.

7.7kdownloads
Unlocked Void Sea - Aeronautics Addon
1.21.1neoforge

Unlocked Void Sea - Aeronautics Addon

A simple utility mod that lets you use the "End Sea" physics from Create: Aeronautics in other dimensions. Extremely configurable.

6.0kdownloads
Over the Sea | Underwater Adventures!
1.21.1neoforge

Over the Sea | Underwater Adventures!

Facing new aquatic dangers in a world made up entirely of water and small islands floating on it.

5.3kdownloads
Scuba Diving Suit
1.20.1forge

Scuba Diving Suit

Scuba Gear adds a functional diving suit designed for underwater exploration, explore the ocean with confort in a vanilla way.

4.7kdownloads
Repurposed Structures - Better Ocean Monuments Compat Port
1.21.1fabric

Repurposed Structures - Better Ocean Monuments Compat Port

TelepathicGrunt’s Repurposed Structures - Better Ocean Monuments Compat Datapack ported to Forge, NeoForge, Fabric and Quilt!

3.1kdownloads
Hybrid Aquatic: Fantastic Fishery
1.21.1neoforge

Hybrid Aquatic: Fantastic Fishery

An addon for Hybrid Aquatic that adds various imaginary fish

2.7kdownloads
Beyond The Ocean
1.21.1neoforge

Beyond The Ocean

A Mod that let´s you explore beyond the oceans of minecraft. New ocean themed planets on a post End level difficulty. New structures, mobs, items and technologies. New adventures and a new story ready to be told.

2.4kdownloads
More Aeronautics Void Seas
1.21.1neoforge

More Aeronautics Void Seas

Makes the Create Aeronautics End Sea spawn in the other two dimensions.

2.3kdownloads
End Sea Everywhere
1.21.1neoforge

End Sea Everywhere

Bare bones datapack that adds the End Sea from create simulated to other dimensions. Useful for Skyblock style modpacks.

1.9kdownloads
Aquatic Fauna Expansion
1.21.1neoforge

Aquatic Fauna Expansion

A NeoForge mod that revitalizes Minecraft's oceans with new creatures, behaviors, and underwater biodiversity.

1.6kdownloads
Aquatica
1.21.1neoforge

Aquatica

Aquatica is a Modpack that contains 400+ Mods, and is primarly focus on Create.

1.4kdownloads
Simple Submarines
1.21.4neoforge

Simple Submarines

Adds submarines for underwater exploration.

1.1kdownloads
Kreyc's Waterworld
1.21.1neoforge

Kreyc's Waterworld

Custom Modpack, where most things are underwater. If you have phobia and/or afraid of being underwater, this pack is most likely NOT for you. But if you are like me; halv fish, then welcome and enjoy!

1.1kdownloads
better mob : sea expansion
1.21.1neoforge

better mob : sea expansion

Better Mob: Sea Expansion transforms Minecraft oceans with unique creatures like Whales, Lobsters, Deep Watchers, Coral Golems, and Jellyfish, creating deeper exploration, dangerous encounters, and unforgettable underwater adventures.

810downloads
SharkSquad - True Survivors
1.21.1neoforge

SharkSquad - True Survivors

Survive against Titans in the apocalypse!

361downloads
Aquatic Creatures
1.21.4neoforge

Aquatic Creatures

Did you know we know most about the space than own ours oceans? I want to make you feel that with this mod

242downloads
Lava Gen Tweaks
1.21neoforge

Lava Gen Tweaks

Tweak the base sea level for lava! Typically starts at -54.

211downloads
Eternal Ocean
1.21.1neoforge

Eternal Ocean

An ocean world with creatable ships along with many new fishes and other creatures. Swimming and fishing are overhauled, along with plenty of new structures and biomes to explore.

165downloads