CurseForge · Minecraft mod
Ocean World Dimension
Explore an endless ocean in the Deep Sea dimension!
Quick answer
Which Ocean World Dimension release should I use?
Ocean World Dimension NEOFORGE-oceanworld-2.0.0-1.21.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Ocean World Dimension required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Ocean World Dimension NEOFORGE-oceanworld-2.0.0-1.21.1.jar need?
NEOFORGE-oceanworld-2.0.0-1.21.1.jar. Change the file and its required mods may change too.
Install Custom Portal API Reforged first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Ocean World Dimension without breaking your instance.
Built for Ocean World Dimension NEOFORGE-oceanworld-2.0.0-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use NEOFORGE-oceanworld-2.0.0-1.21.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Custom Portal API Reforged first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside NEOFORGE-oceanworld-2.0.0-1.21.1.jar. It opens that exact file at the source.
About this project
What does Ocean World Dimension add?
A simple mod I made that adds a new Dimension - the Deep Ocean!
It's literally the vanilla deep sea biome but it goes on forever and the water goes up to block 200. I needed an ocean dimension for a modpack I'm working on but couldn't find one so I just made this myself. Might come back to add some more content to the dimension eventually, but for now it's exactly what it says on the tin - a deep, endless ocean.
HOW TO USE
Build a portal out of prismarine blocks. Just like a nether portal.
Craft a Sea Key using a piece of kelp and a prismarine shard as shown in the image.

- Use the Sea Key to light the portal and travel to the Deep Sea.
I will probably port to fabric when I have time because I also want to make a Fabric version of the modpack I made it for, but for now this is Forge only.
Feel free to use in modpacks and such, I bet it would go really well with any mods that add content to the ocean.
Like my mods? Consider donating to my Ko-fi!
Project description from CurseForge.
Pick your setup
Ocean World Dimension by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.20.1
1 loader build1.19.4
1 loader build1.18.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Ocean World Dimension versions and loaders
NEOFORGE-oceanworld-2.0.0-1.21.1.jar
oceanworld-2.0.0.jar
28 Nov 2025
oceanworld-0.2-1.20.1.jar
8 Jul 2023
oceanworld-0.2-1.19.4.jar
8 Jul 2023
Ocean World (Forge)
oceanworld-0.1-1.18.2.jar
30 Jul 2022
Looking for an older file? The official CurseForge project page is in Resources.