FTB Ocean Mobs in FTB Evolution 2
FTB Evolution 2 1.4.0 ships version 26.1.2.1 · First seen in 1.0.2
FTB Ocean Mobs is a mod in FTB Evolution 2 1.4.0, where it is version 26.1.2.1. A collection of mobs & monsters that lay beneath the ocean's floor (Summary from the mod's Modrinth page.)
FTB Ocean Mobs guide for FTB Evolution 2
Last verified for FTB Evolution 2 v1.4.0 on Oct 17, 2026 · text last changed Oct 17, 2026
Also applies to:FTB StoneBlock 4 1.22.0 to 1.23.0
- Sections
- 5
- Items named
- 4
None of these sections are written for this pack; 5 are shared from another pack's guide.
Every recipe and number here was checked against FTB Evolution 2 1.4.0, read from the running game on Oct 17, 2026.
What is FTB Ocean Mobs?
Same as in the FTB StoneBlock 4 1.22.0 guide
This pack ships FTB Ocean Mobs at version 21.1.4, using the file ftboceanmobs-21.1.4.jar. It is part of the mod list in version 1.22.0.[1]
It isn't new either. The pack's mod list shows it was first included in version 1.0.0 or earlier, so it has been part of the pack since the early releases.[1]
Unverified What FTB Ocean Mobs adds in game (its mobs, their behavior and any settings) could not be confirmed from the material available for this guide, so none of that is described here.
How do you get started with FTB Ocean Mobs?
2 parts
Same as in the FTB StoneBlock 4 1.22.0 guide
There isn't a crafting-first path for this mod that I can confirm, so this section stays short. What I can tell you is what the mod adds, and the one setting this pack gives it.[2]
What the mod adds
FTB Ocean Mobs brings in a group of new mobs: the Abyssal Sludge, Abyssal Winged, Corrosive Craig, Mossback Goliath, Rift Demon, Rift Minotaur, Riftling Observer, Shadow Beast, Sludgeling and Tentacled Horror, plus a boss called The Rift Weaver.[2][3]
It also adds a few items and blocks. You'll see the Sludge Ball and the Abyssal Water Bucket, a spawn egg for each mob, and the blocks Abyssal Water, Energy Geyser and Sludge Block. There is also an enchantment called Rift Disruptor and an effect called Drowning Shadows. The language file only gives their names, so I can't tell you what they do.[2]
The one pack setting to know
The Rift Weaver boss fights inside an arena, and rift_weaver_arena_size controls how far horizontally the boss will roam from its start position. This pack sets it to 48, which is the same as the mod default. The allowed range is 16 to 128.[3]
Unverified No in-pack recipes for this mod's items were found in the sources, so there is no confirmed order of items to craft first.
How does FTB Ocean Mobs work?
5 parts
Same as in the FTB Evolution 2 1.1.0 guide
FTB Ocean Mobs is a mob mod, so there are no power, fluid or item-handling systems to wire up. The sources here confirm a handful of mechanics, and this section covers those.[4]
Rift mobs
The mod groups its creatures in a Rift mobs entity tag: Riftling Observer, Abyssal Winged, Corrosive Craig, Mossback Goliath, Abyssal Sludge, Shadow Beast, Rift Minotaur, Tentacled Horror, Rift Demon, The Rift Weaver and Sludgeling. Each one has its own spawn egg item.[4][5]
The Rift Weaver arena
The Rift Weaver is the boss in this list. How far it roams horizontally from its start position is controlled by rift_weaver_arena_size. The pack sets it to 48, which is also the mod default, and the allowed range is 16 to 128.[6]
Drowning Shadows
The mod adds a Drowning Shadows effect. It also ships a block tag named drowning_shadows_cure, which contains Sponge and Wet Sponge.[4][7]
Seismic block tags
Three block tags in the mod have seismic in their names. The sources show only their contents, not how the mod uses them.[8][9][10]
- seismic_smashable: sandstone, crimson planks, blackstone, cobbled deepslate, deepslate bricks and everything in the c:glass_blocks tag.[9]
- seismic_smashed: red sand, sand and gravel.[10]
- seismic_cracked: crimson slabs, crimson stairs, blackstone slabs, cracked deepslate bricks and cracked deepslate tiles.[8]
Sludge items
Sludge Block drops itself when broken, and it still drops if it is caught in an explosion.[11]
The pack adds Sludge Ball to both the c:slimeballs and c:slime_balls item tags. Recipes that accept slimeballs through those tags will therefore take it.[12]
How do you progress through FTB Ocean Mobs?
1 part
Same as in the FTB Evolution 2 1.2.1 guide
This one is a short section, and I'd rather tell you that straight than invent a tier ladder. For FTB Ocean Mobs, the sources I have show data tags and a block loot table, but nothing that lays out stages of progression.[5][11]
Unverified Quest steps and crafting recipes for this mod's items would live in the pack's quest book and recipe data. The sources here show neither, so there is no confirmed tier order or unlock path to describe.
What the mod's data does show
The mod groups its creatures in a rift mobs entity tag. It lists the riftling observer, abyssal winged, corrosive craig, mossback goliath, abyssal sludge, shadow beast, rift minotaur, tentacled horror, rift demon, rift weaver and sludgeling.[5]
- The sludge block, Sludge Block, drops itself when broken, as its loot table has a single entry for the same block.[11]
- The mod's drowning shadows cure tag contains Sponge and Wet Sponge.[7]
- The seismic tags name blocks the mod treats specially. Sandstone, crimson planks, blackstone, cobbled deepslate, deepslate bricks and any glass block are in the smashable tag.[9]
- Sand, red sand and gravel are in the smashed tag.[10]
- Crimson slabs, crimson stairs, blackstone slabs, cracked deepslate bricks and cracked deepslate tiles are in the cracked tag.[8]
Which FTB Ocean Mobs config options matter?
1 part
Same as in the FTB StoneBlock 4 1.22.0 guide
There is only one config option for this mod in the pack's common config file, and it controls the Rift Weaver boss fight. It is the one to know if you plan to take that boss on.[3]
Rift Weaver arena size
rift_weaver_arena_size sets how far horizontally the Rift Weaver boss will roam from its start position. In other words, it is the size of the boss arena. This pack sets it to 48, which is the same as the mod default, so the pack has not changed it. The allowed range is 16 to 128.[3]
Sources
- FTB StoneBlock 4 1.22.0 mod list · pack file
- ftboceanmobs names, screen text and descriptions (English lang file) · official mod data
- FTB StoneBlock 4 1.22.0 config: config/ftboceanmobs-common.toml · pack file
- ftboceanmobs names, screen text and descriptions (English lang file) · official mod data
- data/ftboceanmobs/tags/entity_type/rift_mobs.json (ftboceanmobs's jar) · official mod data
- FTB Evolution 2 1.1.0 config: config/ftboceanmobs-common.toml · pack file
- data/ftboceanmobs/tags/block/drowning_shadows_cure.json (ftboceanmobs's jar) · official mod data
- data/ftboceanmobs/tags/block/seismic_cracked.json (ftboceanmobs's jar) · official mod data
- data/ftboceanmobs/tags/block/seismic_smashable.json (ftboceanmobs's jar) · official mod data
- data/ftboceanmobs/tags/block/seismic_smashed.json (ftboceanmobs's jar) · official mod data
- data/ftboceanmobs/loot_table/blocks/sludge_block.json (ftboceanmobs's jar) · official mod data
- kubejs/server_scripts/tags/item.js (FTB Evolution 2's own script) · pack file
Where this guide comes from
Written from what FTB Evolution 2 itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.
Guide last verified Oct 17, 2026.
Guides for other versions: 1.2.0 to 1.3.0 · 1.0.2 to 1.1.0
Report wrong info
Version in each release
9 releases, first in 1.0.2
| FTB Evolution 2 | Version | Jar | Where it came from |
|---|---|---|---|
| 1.4.0 Oct 17, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.3.2 Oct 16, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.3.1 Oct 15, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.3.0 Oct 14, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.2.2 Oct 13, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.2.1 Oct 12, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.2.0 Oct 12, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.1.0 Oct 10, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
| 1.0.2 Oct 8, 2026 | 26.1.2.1 | ftboceanmobs-26.1.2.1.jar | From the published release |
"From pack files" means the list came from the pack's own files; "from the published release" means ForgeBase read the jars of the release itself.
Items and blocks
15 items from the 1.4.0 recipe dump.
Abyssal Sludge Spawn Egg
Abyssal Water Bucket
Abyssal Winged Spawn Egg
Corrosive Craig Spawn Egg
Energy Geyser
Mossback Goliath Spawn Egg
Rift Demon Spawn Egg
Riftling Observer Spawn Egg
Rift Minotaur Spawn Egg
The Rift Weaver Spawn Egg
Shadow Beast Spawn Egg
Sludge Ball
Sludge Block
Sludgeling Spawn Egg
Tentacled Horror Spawn Egg
Config options (how FTB Evolution 2 sets them)
1 settings shipped in the pack's config files; 0 differ from the mod's documented default.
Show settings
| Setting | FTB Evolution 2 value | Mod default |
|---|---|---|
rift_weaver_arena_size Rift Weaver boss arena size (how far horizontally will the boss roam from its start pos config/ftboceanmobs-common.toml | 48 | 48 |
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