About Sea Legend
From ModrinthSea Legend adds a massive multi-phase ocean boss, the custom Leviathan Abyss biome, pirate ships, shipwrecks, lighthouses, exploration maps, unique loot, Abyssal armour and the powerful Fang Blade.
Sea Legend: The Leviathan
Sea Legend: The Leviathan is a Forge 1.20.1 ocean adventure mod built around a huge custom boss, new exploration content and powerful Leviathan-themed gear.
Explore the Leviathan Abyss, a massive deep-ocean biome where pirate ships, shipwrecks and the Leviathan itself can be found.
Along the coast, you may also discover lighthouses containing supplies, a boat and a special map that can help guide you toward the Leviathan Abyss.
The Leviathan
The Leviathan is a large three-phase underwater boss with custom GeckoLib animations, swimming AI and several attacks including:
Bite Tail Swipe Body Ram Abyssal Roar Vortex Abyssal Beam
It becomes faster and more aggressive as the fight progresses.
Rewards
Defeating the Leviathan can reward:
Leviathan Heart Abyssal Scales Leviathan Fangs
These materials can be used to craft Abyssal Leviathan Armour and the Abyssal Fang Blade.
The armour gives stronger ocean-related effects as more pieces are equipped, while the Fang Blade has abilities such as an Abyssal Wave, underwater dash and bonus combat effects.
Exploration
You can find:
Leviathan Lighthouses Abyssal Pirate Ships Abyssal Shipwrecks Leviathan Abyss biome
All custom structures can also be found using Minecraft's /locate structure command.
Requirements Minecraft 1.20.1 Forge 47.x GeckoLib 4.x TerraBlender 3.x
Enter the Abyss, find the Leviathan, and see if you can survive.
Highlights
From source dataGame versions
Built for Minecraft 1.20.1.
Loaders
Runs on Forge.
Footprint
Rated a light load on a server.
Sea Legend on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Forge
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.1.0, released 2026-10-03
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Forge | 1.20.1 | 1.20.1 |
From 2 recorded builds of Sea Legend.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.1.0 | 2026-10-03 | 1.20.1 | Forge |
| 1.0.0 | 2026-08-08 | 1.20.1 | Forge |
Dependencies
- Required: modrinth project kkmrDlKT (modrinth, not in our catalogue)
- Required: modrinth project 8BmcQJ2H (modrinth, not in our catalogue)
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Sea Legend on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogVehicles & ships
Cars, boats, aircraft, ships and other things to drive or fly.
Runs on your server
From source side supportModrinth lists Sea Legend as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- Forge
- Runs on
- Serverrequired on the server
- Game versions
- 1.20.1
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-03Open ↗
- ✓AuthorNexusMods, as published on Modrinth
- ✓LicenseLicenseRef-All-Rights-ReservedFree
