oncehuman.worldIsles of Abyss
Find weapons, deviations, mods

Live data limited Live game data is temporarily limited due to heavy traffic. The Isles of Abyss status is hidden for now; trade prices and population show the last values received.

Difficulty & rewards

Combat difficulty, recommended gear by level, and reward previews

Combat difficulty

Calamity Tower

By towers first cleared on the server (first clears and rematches alike)

  • No tower cleared yetLv.10
  • 1 tower clearedLv.10
  • 2 towers clearedLv.20
  • 3 towers clearedLv.30
  • 4 towers clearedLv.40
  • 5 towers clearedLv.50

Calamity Tower - Abyss

  • Calamity Tower - Broken OathsLv.60
  • Calamity Tower - Burning GrudgeLv.70
  • Calamity Tower - Raging TidesLv.80
  • Calamity Tower - Fallen DefenseLv.90
  • Calamity Tower - Devouring DeepLv.100

Voyager Fleet

  • Set Sail for ExplorationLv.50T5
  • Sea Duel · Purification ≥ 0%Lv.50T5
  • Sea Duel · Purification ≥ 10%Lv.55T5
  • Sea Duel · Purification ≥ 30%Lv.60T5
  • Sea Duel · Purification ≥ 50%Lv.65T5
  • Sea Duel · Purification ≥ 70%Lv.70T5
  • End of StormLv.80T5

Destroying Voyager fleets increases season progress.

Calamity Zone level → recommended gear

  • Lv.5~10Tier I
  • Lv.15~20Tier II
  • Lv.25~30Tier III
  • Lv.35~40Tier IV
  • Lv.45~80Tier V

Each zone has its own level. Clear a calamity zone to advance seasonal progress

Reward preview

Same lists as the in-game reward preview

Calamity TowerServer-Wide Challenge Rewards

  • Starchrom×500
  • Energy Link×5,000
  • Mitsuko's Mark×200
  • Tech Points×20
  • Heart of the Ocean

Calamity Tower - Re-engagementPartial Reward Preview

  • Energy Link
  • Stardust Source
  • Keyword Suffix Mod Crate
  • Keyword Suffix Mod Selection Crate - Legendary
  • Island Mod Selection Crate - Legendary
  • Gingerbread House - Oceanic Cottage
  • Shattered Maiden - Sailor Suit

Calamity TowerPersonal Challenge Rewards (Unlocked at Difficulty Lv 50)

  • Heart of the Ocean×5

Calamity Tower - AbyssPersonal Challenge Rewards (Unlocked at Difficulty Lv 50)

  • Heart of the Ocean×5

Voyager FleetReward Preview

  • Heart of the Ocean
  • Tier Ⅴ Weapon
  • Tier Ⅴ Armor
  • Armor Mod
  • Mod Selection Crate - Legendary
  • Whalepup - Don't Get Wet
  • Employee No. H37 - Submarine Attitude
  • Captain's Mark
  • Reverse-Engineered Blueprint: Black Tide Clot Mining Technology
  • Reverse-Engineered Blueprint: Mist of Deceit Wick Mining Technology
  • Reverse-Engineered Blueprint: Skyfire Gold Mining Technology
  • Reverse-Engineered Blueprint: Bottled Raindrops Mining Technology
  • Reverse-Engineered Blueprint: Fossil Mining Technology

Sea Medium ZonePartial Reward Preview

  • Energy Link
  • Heart of the Ocean
  • Armor Mods
  • Armor Mod Selection Crate - Legendary
  • Space Turner - Water Cube

Sea Large ZonePartial Reward Preview

  • Energy Link
  • Heart of the Ocean
  • Armor Mods
  • Armor Mod Selection Crate - Legendary
  • Space Turner - Water Cube
  • Territory Shield
  • Auto Repair Device
  • Revive Station

Land Small ZonePartial Reward Preview

  • Heart of the Ocean
  • Cannonball
  • Armor Mods
  • Snow Globe - Shipwreck Treasure
  • Mod Dust

Land Medium ZonePartial Reward Preview, Lv.5~55

  • Heart of the Ocean
  • Cannonball
  • Armor Mods
  • Snow Globe - Shipwreck Treasure
  • Mod Dust

Land Medium ZonePartial Reward Preview, Lv.60~80

  • Heart of the Ocean
  • Armor Mods
  • Snow Globe - Shipwreck Treasure
  • Reverse-Engineered Blueprint: Black Tide Fuel
  • Reverse-Engineered Blueprint: Alloy Material
  • Reverse-Engineered Blueprint: Mist Core Cannonball
  • Reverse-Engineered Blueprint: Time-Reverse Welding Torch

The in-game reward preview lists (no drop rates or exact amounts; amounts shown only for fixed rewards). Zone types without data (sea small, land large, etc.) have no preview in game either.