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Spectral Seas

Spectral Seas

by Unknown • Downloads: 0 • Followers: 0
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Spectral Seas is a survival and exploration-focused modpack inspired by pirate movies, Age of Sail swashbuckling and my fevered imagination. Sail the world and unlock the mysteries of Spectrum to discover the secret beneath the bedrock.

The Situation

You met your Grandad but once, but his colorful garb, theatrical mannerisms, and wild tales of life on the open sea left a permanent impression. Father always spoke disdainfully of the old man, but this did nothing to dim your fascination. When dad passed on, he left you a modest inheritance and an exceedingly dull family business. It was no surprise when you sold off the enterprise and joined a merchant crew as a deckhand.

In retrospect, it should also have been no surprise when the ship was set upon by pirates and you were hurled overboard in shark-infested waters.

You very nearly drowned, and now you've washed ashore upon an unknown island, with nothing but a bundle of rations, your Grandad's nasty old cutlass, and a tattered book that a sailor thrust in your hand shortly after the ship left port.

It will be dark sooner than you know, and you're getting hungry. Hopefully some trace of Grandad's swashbuckling blood will keep you alive long enough to get out of here.

Features

A Perilous Beginning: Start with a meager stash of supplies and your trusty parrot, and scramble to survive on an unknown island.

A World of Islands: Custom terrain generation that creates a world of deep, endless oceans dotted with islands of various sizes.

Sail the Infinite Seas: Build and sail a ship around the world - and name it, decorate it, and upgrade it. Never lose track of it - because a marker is automatically placed on the map when you disembark.

The Life Aquatic: Varied ocean biomes teeming with sea life - from sharks to squids…to stranger things.

Scurrilous Pirates: Beware of pirate ships on the high seas - and their dangerous hideouts on the shores. Those who brave their hail of bullets may find their treasure worth the risk.

Mysteries and Magic : A carefully curated collection of customized structures to explore, and many clues and custom map integrations to lead you to them. And beneath that, a whole hidden world to discover.

Underworlds Unknown: Completely customized cave generation in the Overworld, and a Nether like you've never seen - a dark mirror of the Overworld with hellish islands floating in an endless sea of lava.

The Fine Print

The pack has finally had an official 1.0.0 release. It's alive!

As always, this release comes with my personal guarantee: if it breaks in half, you get to keep both halves.

All Versions

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Name Game version Platforms Published Downloads Actions
1.20.1
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[2.0.0] Spectral Seas 2.0.0 by Unknown on Oct 18, 2026
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## [2.0.0] The Endless Update!

Dimensions come, dimensions go. Some quality of life changes. Some unpleasant surprises. A sanctum sanctorum.

This is a major update and makes some incompatible changes to world generation. Don't try to update a world from 1.0.x – start a new one.


### Changed

  • Removed the End dimension
  • Removed strongholds and all End Portal related content
  • Eyes of ender lead to a different structure
  • Required End content has been moved to a new secret cave biome, the Ender Caves
  • Renamed Dragon's Breath to Dragonfly Breath. Can be obtained in small amounts by feeding dragonflies unusual snacks
  • Increased minimum distance between shipwrecks
  • Cleaned up the EMI index a bit and grouped more items
  • Tweaked Ecologics walnut trees to fit in better with Geophilic oak trees
  • Reduced spawn counts for Corsairs on beaches
  • Made Gliders recipes cheaper
  • The slingshot can now fire splash potions, fire charges, bombs, snowballs, and ender pearls
  • Disabled biome temperature speed modifiers for Small Ships
  • Made sus sand patches for beachcombing slightly larger
  • Unified Bleeding effects from Hybrid Aquatic and Tridents n' Stuff
  • Removed a few enchantments
  • Dullness: too dull
  • Phase Strafe: too hard to use, not different enough from Phase Leap
  • Hover: too similar to Air Hop and Cotton Cloud boots
  • Increased variation in ration sack contents
  • Removed the Spectrum multitool (sorry)
  • Suppressed a bunch of useless log messages
  • Switched item removals to use Reliable Remover instead of custom KubeJS scripts
  • Restored Inventory Profiles Next and replaced MacOS Input Fixes with NoEmu to work around item scrolling bug
  • When popping up the location of an explorer map in the atlas, we try to set the zoom level to fit both the player marker and the map destination marker on screen
  • Wandering traders and cartographers will sell a Mysterious Underground Map for one obsidian block

### Added

  • Added the Port-Folio, a little piece of luggage that allows the player to access a personal pocket dimension
  • Crafted with a tier 2 pedestal
  • To use, place on the ground, bind with a Paintbrush, and click to open
  • When open and crouched upon, transports the player to their personal Workspace
  • Added Potion Workshop recipes for most non-vanilla potions
  • Added Enchanter recipes and upgrade recipes for most non-vanilla enchantments
  • Added EMIDiscovery to prevent the EMI index from revealing too many secrets
  • The index only displays items which the player has held, and items that can be crafted from known items
  • The set of known items is pre-populated with most vanilla items
  • Usage lookup is disabled for craftable but unknown items
  • Added some fun surprises to towers
  • Seagulls now drop feathers
  • Tall dunegrass can be woven into string
  • Sacks and bundles are now dyeable
  • The Crystal Apothecary can now collect Galosphere crystal shards
  • Added Stucturify mod to prevent structure overlap and limit structure generation near spawn
  • Added FastNoise mod to help with worldgen speed
  • Added pack version number to home screen and logs

### Fixed

  • Pirate ships no longer drop their hold loot when despawning due to distance
  • Improved automatic third-person transitions when swimming or entering a boat
  • Disabled the shield decoration recipe since adding banners doesn't work with round shields
  • Tropical stew is no longer edible when full
  • Fixed coal not appearing in shipwreck supply chests
  • Added missing translations for caving advancements
  • Added missing Antique Atlas tile configuration for custom biomes
  • Removed Enchanter recipes for removed vanilla enchantments
  • Fixed duplicate ship markers when changing the sail color of a ship with an existing marker
  • Fixed empty armory chests in pillager outposts

[1.0.3] Spectral Seas 1.0.3 by Unknown on Oct 18, 2026
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## [1.0.3] 2026-02-08

More ship variants, a few bugfixes, some QOL changes, and ziplines. For no reason except ZIPLINES!

## Fixed

  • Fixed anchor point for about menu. Should fix about menu weirdness on high resolution screens
  • Reduced number of mods shipped as overrides on both Modrinth and CurseForge

## Changed

  • Replaced Inventory Profiles Next with Mouse Tweaks to fix inventory scroling

## Added

  • Added crafting recipe for saddles
  • Added Easy Shulker Boxes. Replaces Bundle Backport-ish and allows loading and accessing sack contents in the inventory
  • Small Ships can now be crafted from Ecologics wood types: walnut, azalea, flowering azalea, and coconut
  • Added Ziplines:Rezipped. Connect fences with ropes or chains and zip along them by holding RMB and jumping while aiming at a line holding a pickaxe.
[1.0.2] Spectral Seas 1.0.2 by Unknown on Oct 18, 2026
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A few tweaks to early game based on player feedback and my own playtesting.

### Added

  • Force a small island to exist at world spawn if there is no dry land there
  • Added seashells to Stony Shores

### Changed

  • Make towers slightly more common
  • Pirate Ship updates

  • reduced pirate ship spawn rates
  • lowered base speed, increased starting speed, reduced slowdown in turns
  • increased crew size by 1
  • added loot to ship holds

  • Disabled forced fullscreen on launch
  • Move third person maps below the compass ribbon
  • Disable HUD hiding by default

### Fixed

  • Cleaned up some log spam
[1.0.1] Spectral Seas 1.0.1 by Unknown on Oct 18, 2026
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What would a new release be without a few hotfixes?

  • Remove Spawn Balance Utility unti l can figure out why it was blocking all Hybrid Aquatic mobs. This made it unreasonably difficult to progress!
  • Disable auto-third-person when riding animals
  • Fix some broken messages in bottles.
  • Auto-load the About screen on first load.
  • Fix some elements being misplaced on the About screen when resizing windows.
  • Fixed the Brigg recipe having the wrong item IDs for a couple of ingredients.
[1.0.0] Spectral Seas 1.0.0 by Unknown on Oct 18, 2026
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A release version!

Significant changes since the last Beta:

  • Removed some unused large assets. Smaller pack!
  • Added an About screen.
  • Spawning adjustments to prevent vanilla mobs from being crowded out by modded mobs
  • Add some instructions to the Eccentric Tome lore. The tome also only has the guidebook in it initially.
  • Pirates occasionally drop grog
  • Game days are now 20 minutes long. Nights are still 10 minutes.
  • You can now burn various types of shells to get bonemeal.
  • Prevented otters from boarding ships.
  • Simplified and improved pirate ship navigation.
  • Replaced KubeJS scripts for ship upgrades with a new mod.
  • Fixed ship damage not being persisted on save.
  • Updated Elder Guardian Loot tables with sweet trident stuff.
  • Tweaked and reorganized advancements
  • Made potato plants more likely to drop a poisonous spud. For Reasons.
  • Replaced wooden tool tier with seashell
  • Worldgen tweaks for more high terrain, which also makes Topaz geodes easier to find.
  • Supply sacks in shipwrecks are now randomly filled from loot tables.
  • Fixed damage amounts to equipment found in tower chests.
  • Made village generation more likely.
  • Made ruined portals more common.
  • Wearing both diving suit and diving leggings now gives slowness.
  • Shears are copper now.
  • Wild boars are now larger and more aggressive.
  • New messages in bottles, and edits to old ones.
  • Beachcombing! Look for patches of suspicious sand on beaches.
  • Made hermit crab shell drops worse.
  • Added ocean trenches to deep oceans.
  • Pirates attack in Cogs instead of Briggs at lower local difficulty.
  • Tweaked distribution for underwater structures.
  • Slightly less blighted trashslot icon.
  • Add map tiles and markers for Swampier Swamps villages.

  • updated fabric loader to 0.17.3
  • fixed bug in Loot.js, handle missing enchantments gracefully
  • add Actually Harvest
  • fix shader config
  • Updated to Hybrid Aquatic 1.5.2
  • Lots of minor mod updates
  • Gratuitious worldgen fiddling
  • Other cool things I can't remember!
Tiny patch for an ugly bug.

  • Fixed sleeping on ships being broken because scope in KubeJS is very cursed.
This update has only one notable new feature, but it's a big one!
  • PIRATE SHIPS ON THE HIGH SEAS
  • Appear randomly in deep ocean biomes
  • More likely to appear at dawn, dusk, in the rain, or on nights with a new moon
  • Chase players around firing volleys of cannonballs
  • Flee when out of ammunition
  • More likely to appear, faster, and more heavily armed depending on local difficulty

Also:
  • Fixed an issue where the Deeper Down dimension got weird because it reused noises and density functions from the overworld.
  • Added missing translation strings
  • Implemented a fake mobcap for Galosphere Spectres
  • Count distance from player spawn, not world spawn for "On Foreign Shores" advancement
  • Rearranged advancements
  • Cleaned up unused resources
  • Ocean structure placement tweaks
  • Got rid of ocean fossils, they're boring
  • Lots of minor mod updates
  • Rearranged some structure sets, especially ruins
  • Switched back to mainline Deeper Oceans and slightly reduced ocean depth multiplier (3x to 2.5x)
  • Made spears use trident animations instead of two-handed polearm
  • Updated Revamped Shipwrecks
  • Added Particle Rain
  • Added automatic map markers for leashed horses

  • Removed a few useless items and recipes (seashell tools, nautilus armor set, uncraftable idols from Archeology+, etc. etc.)
  • Added missing repair recipes for muskets and tridents.
  • Show the compass ribbon if a compass is in the hotbar, not just in a hand.
  • Fixed uncraftable potion appearing in buried treasure.
  • Mod updates
  • Add pirate flag map markers for pirate structures
  • General cleanups and reorganization
  • Nuke some more enchantments.
  • Gate Brigg recipe with ship upgrades.
  • Add TieFix (mostly for riptide fix)
  • Fix armorer trade table
  • Update mods. Remove unused mods.
  • Replace Selfish Villager mod with Thief.
  • Make glow lichen less common underground.
  • Rename settings file for Complementary shaders version bump
  • Script fixes for dedicated server.
  • Add Too Fast to stop ships from rubberbanding.
  • Tweaks for dedicated server.
  • Update Stamina For Tweakers
  • Improve broken item handling.
  • Recipe for Fisherman's Resin (repair material for tridents)
  • Fixed weird case where an entity type wasn't stringified automatically, causing log spam.
  • Fix Jolly Roger banner on Pirate patrol leaders.
  • First draft of villager trade rework - now they trade for gold, have no enchanted books, and no diamond items.
  • Mod updates. Add TerraBlenderFix
  • Fixed Pirate Factory uniforms not working (missing Java import)
  • Fixed faulty ship upgrade check which prevented ship upgrades from being applied.
  • Slashed spawn rates for vanilla squid and glow squid in ocean biomes.
  • Fixed some issues with map markers.
  • Removed unused Enchanting Tweaks mod.
  • Fixed missing sound registration that led to infinite sharks.
Welcome to the first public beta release of Spectral Seas! This release focuses on refining the loot system, tuning structure placement, and some fairly major surgery to the enchanting system. Here are some things to be aware of:

  • The enchanting table has been removed! Collect enchanted items from structures and ruins and combine them with an anvil. Later in the progression, other options for enchanting open up.
  • Diamonds are rarer in loot. Most diamond equipment in loot is "broken" and requires diamonds to repair.
  • Named or enchanted items don't vanish at zero durability, they become broken and unusable until repaired at an anvil.
  • Most types of equipment can be upgraded between material tiers. Unenchanted items can be upgraded at the crafting table, enchanted items need an anvil.
  • Ship upgrades are primarily found in Pirate (pillager) structures. Face off against these ruffians to make your ship faster or hold more cargo.
  • Structures contain themed loot. The resources and enchantments available vary significantly between locations.
  • Update mods
  • fixed default keybindings
  • now using all 16x16 textures (death to mixels)
  • new variant skins for Pirates
  • tweaks to pirate hats
  • Fixed: Tag and item modification scripts needed multiple reloads because we were reading the Item registry too early.
  • Swords, cutlasses, rapiers, and longswords have their own Tinkerer's smithing types, so they can't be crossgraded to one another willy-nilly.
  • Fixed missing Rotten Creatures mod causing a crash in Custom Mob Spawns
  • Added PotionCraft
  • Added a detailed and unnecessary subsystem involving magical chowder cauldrons
  • Mob spawn tweaks (variants completely replace vanilla skeletons and zombies in some biomes).
  • Towers are now decorated differently by type
  • Jungle bushes are made of jungle leaves as God intended
  • Made rooted azalea less common since Lush Caves are more common
  • Grave markers are removed from the map when claimed.
  • Removed grapplemod for now
  • Replaced grappling hook loot with hookshots
  • Added Air Hop to replace the grapplemod double jump enchant
  • Fixed ship marker removal when boarding a ship
  • Tweaks to TreeChop config for chopping with the wrong tool and chopping Lichen Mushrooms.
  • Fix antique atlas map packet handling.
  • Added HT's TreeChop

There is currently an issue with chopping trees without a tool (it only costs stamina for the first chop) but I think I'll be able to figure something out before the full release.
  • Fixed some issues which prevented the pack from working on a dedicated server.
  • Replaced I Can't Update - Bundles of Bravery with Bundle Backport-ish due to network crashes.
  • Add some missing translation strings
  • Add structure markers for Ribbit villages
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