Minecraft Java 1.21 Mods
Browse 29 free mods for Minecraft Java 1.21 — popular picks include YUNG's Better Caves (Forge/NeoForge), Ocean Floor - Clay Sand and Dirt, Underwater Village - Oceanic Structures.
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YUNG's Better Caves (Forge/NeoForge)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Ocean Floor - Clay Sand and Dirt
Spawns patches of Clay, Sand, and Dirt, within the Deep Dcean layer of boring gravel
Underwater Village - Oceanic Structures
Discover a lot of new oceanic structures!
YUNG's Better Caves (Fabric)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Unnamed Sea
Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.
Better Cave Worlds
Datapack that creates Cave Worlds, based on the old preset, featuring all biomes, ocean caves, and most structures.
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.
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!
Lavaflow
Completely overhauled Nether: Lava rivers on 2 heights with lavafalls between them, proper valleys, oceans, and new biomes and structures.
Ocean Revamp
New ocean biomes to improve your aquatic journeys in vanilla
d3v_c's Terrain Overhaul
Fabric worldgen overhaul for 1.21.11: taller mountains, deeper terrain, rebalanced biome climate zones, more natural caves, and improved underwater shaping for realistic Overworld landscapes.
oceans biomes
Create worlds made entirely of oceans with a simple configuration screen. Choose the ocean biome, tweak depth, and enable or disable islands and ocean structures.
Aqua Forge
This is a data pack that will generate an ocean biomes only world.
Aquarius Trilogy
Add a new aquatic dimension featuring some refreshing biomes and structures
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.
Lava Ocean
Adds A New Biome Called Lava Ocean!
Lavaflow Data Pack (1.21.11) – A Dynamic And Deadly Nether Overhaul
Lavaflow Data Pack transforms the Nether with multi-layered lava rivers, cascading lavafalls, vast oceans, and properly shaped valleys. Explore new biomes and structures in a more immersive and treacherous underworld! Enjoy playing this data pack! Features: Lavaflow completely overhauls the nether. Instead of the random noise of the vanilla nether, Lavaflow features specifically crafted terrain, […]
Superflat Dimensions Data Pack (1.21.10, 1.20.1) – All Dimensions, but Flat
Superflat Dimensions Data Pack changes how your Minecraft worlds are built. It makes every dimension, including the Overworld, Nether, and End, completely flat. Unlike the regular Superflat world option, this pack keeps all the different biomes. This means you can still explore flat snowy plains or vast oceans. You will also find normal structures like […]
Better Single Biome Mod (1.21.4, 1.21.1) – Improves Single Biome World Generation
Better Single Biome Mod makes a few changes to the world generation to make worlds generated in single biome mode a lot better. All biomes are supported except water biomes and mangrove swamp. The mod lowers the sea level, lowers the geode generation level, improves underwater vegetation, increased structure generation, etc. Features: World generation tweaks […]
EMD123's Ships Data Pack (1.21.4, 1.20.1) – Adventure of the Seas
EMD123's Ships Data Pack introduces a new adventure structure to make the ocean more interesting. The ocean is usually considered the most empty and most boring biome in Minecraft. This simple worldgen data pack aims to make the sea a bit more exciting by adding in Illager Ship. There are a few kinds of Illager […]
The Middlelands Data Pack (1.21.4, 1.20.6) – A Miners Paradise
The Middlelands Data Pack introduces a brand new dimension, a treasure trove for miners and explorers alike. Prepare to be awestruck by its unique biomes, vast resources, and thrilling challenges. Features: Diamonds & Gold appear abundantly in the form of ore veins. Giant caves, deep networks, lava oceans. Each biome has its own terrain, challenges, […]
Night Vision Resource Pack (1.21.1, 1.20.1) – Texture Pack
Night Vision Resource Pack significantly enhances visibility in low-light conditions, making nighttime exploration, deep cave mining, and underwater adventures much more manageable. With improved lighting and clearer visuals, this pack removes the need for excessive torches or potions, allowing players to see in the dark effortlessly. Whether you're navigating dense forests, exploring vast oceans, or […]
Tax' Deep Villager Mod (1.21.1, 1.20.1) – Explore Underwater Villages
Tax' Deep Villager Mod adds underwater villages to the game. With this mod, players can discover new villages located beneath the ocean, introducing a fresh environment to explore and interact with villagers in an aquatic setting. Features: Adds fully functional undersea villages to Minecraft Expands village exploration into underwater biomes Enhances the diversity of village […]
No More Grass and Kelp Data Pack (1.21.1, 1.20.1) – A Cleaner and Minimalist Landscape
No More Grass and Kelp Data Pack removes grass, tall grass, kelp, seagrass, and ferns from Minecraft's world generation, creating a more barren and simplified terrain. Perfect for players who prefer a minimalist aesthetic or want more control over their world’s vegetation, offering a unique and clean visual experience in both land and sea biomes. […]
Qrafty Qrafty's Oilrigs Mod (1.21.1, 1.20.6) – Adds Oilrigs To Oceans
Most biomes in Minecraft have their own village type. What do ocean biomes have? Well, nothing. Qrafty Qrafty's Oilrigs Mod aims to add a villager housing to ocean biomes by adding a new structure. These new structures, called oilrigs, generate only in ocean biomes and will inhabit one villager. The structure itself is mostly made […]
Ocean Only Generation
This project makes only ocean biomes generate
Extreme RPG World Enhancement
This is a modpack that adds more vanilla features such as more sea life and better biomes both with an added element of better magic.
SmallAquatic's Meat Mayhem
Can you beat this meat mod?
Terrarium Expanded Mod (1.21.11, 1.21.1) – Travel Across Real Earth Continents
Terrarium Expanded Mod generates a real-world Earth overworld in Minecraft using actual elevation and map data. It replaces standard world generation with real global terrain, surface water, and biome layouts. The mod lets you pick different zoom levels to explore realistic continents, mountains, and oceans. It also works with popular biome mods to give world […]