Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia) logo

Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia)

Mod

by Vllax

ArPhEx: Intricate, phobia-inducing, realistic mobs, and supernatural bosses

Downloads

7,464,998

Type

Mod

CurseForge ID

967672

Last Updated

Apr 9, 2026

Description

Arthropod Phobia Expansions

ArPhEx - The ultimate arthropod horror+RPG mod with powerful stalking bosses, along with realistic arachnids, insects, centipedes, and more. A hardcore mod expanding the endgame with brutal enemies and progression for those brave enough to face the challenge. 

Join the awesome ArPhEx Discord server for early teasers and beta versions of upcoming features, plus suggestions and fast support available https://discord.gg/sQQPZQSEpS

NEW: PATREON AVAILABLE TO SUPPORT MY MOD DEVELOPMENTS, WITH EXCLUSIVE PERMANENT PERKS AVAILABLE FOR EACH TIER OF MEMBERSHIP!: https://www.patreon.com/c/vallax/

Important ⚠️

Some of the main features:

  • A huge variety of detailed, realistic, creepy new arthropod mobs based on real life counterparts
  • Nightmarish horror-style demon bosses that can stalk you across multiple dimensions
  • An entire custom dimension, called "The Crawling", with unique mobs and worldgen of its own
  • A biome-sized wither storm-like eldritch horror final boss
  • Multiple large custom dungeon structures 
  • Countless new items, special weapons, tameable mobs, and tools of all kinds
  • A truly challenging PvE experience, extending far past the vanilla endgame (yet balanced, strong mobs are uncommon)
  • Countless configuration options, including an "insanity mode" feature for more fast-paced gameplay styles (enables crawling dimension mobs in the overworld)
  • A wiki providing intricate details on most features of the mod
  • Regular updates with more and more crazy content being added

 

ARPHEX WIKI LINK: arphex.miraheze.org


Note that the real life versions of all these arthropods are largely harmless, passive, or even friendly towards humans, and this mod does not intend to accurately represent their behaviours.

 

Proudly sponsored by Bisect Hosting - Do you want to experience ArPhEx with friends? BisectHosting provides all your gaming server needs - New customers can use code PHOBIA to save 25% on the first month - 24/7 support available for a seamless gaming experience. Supports my solo development of this mod!

Bisect Hosting

 

 

 

 

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Beware the thunder 

Truly overwhelming and ominous forces of nature - Survival will not be easy; these powerful entities are death incarnate, spawning naturally and coming with advanced mechanics to terrorise and stalk you down from long distances. Ranged weapons (when possible) and high mobility recommended, nowhere is safe from these creatures. Hallucination entities foreshadow their rare appearances, marked with lightning strikes. They are also summonable, dropping powerful items on death, as they are demon lords originating from the Crawling dimension, manifesting as hybrid arthropod abominations.

SPIDER MOTH

Overworld-exclusive spawns during thunderstorms. Avoids spawning near players that have killed it at full power. Like the warden, this entity is something to run from, not try to kill until you become very strong.

Spider Moth Dweller Boss

[BOSS]

Multiple phobias combine to create a nightmarish hybrid creature with an original design incorporating some elements of Mothman folklore.

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Moth

 

SCORPIOID BLOODLUSTER

Nether-exclusive spawns during rain+thunderstorm cycles. Avoids spawning near players that have killed it, or haven't warded off the Spider Moth twice.

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 [BOSS]

An ominous flying demonic entity that can stalk you in the nether, adding a true horror element there. Original design with hybrid elements of scorpion and mosquito morphology.

Wiki page:

https://arphex.miraheze.org/wiki/Scorpioid_Bloodluster

 

DRACONIC VOIDLASHER

End-exclusive spawns during rain+thunderstorm cycles. Avoids spawning near players that have killed it, or haven't warded off the Spider Moth twice.

Draconic Voidlasher

 [BOSS]

A horrifying demonic entity with telekinetic powers lurks in the end, following you with teleportations. Original design combines elements of tailless whip scorpion and dragonfly (meganeura) morphology.

Wiki page:

https://arphex.miraheze.org/wiki/Draconic_Voidlasher

 

ARACHNOID TRISECTOR

Rare crawling-exclusive spawns on layer 2+4. 

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 [BOSS]

A ruthless monstrosity with powers over time itself, this creature will make survival perilous for players at any game stage. Original design hybridising elements of trilobite (dicranurus) and spider (flic flac) morphology.

Wiki page:

https://arphex.miraheze.org/wiki/Arachnoid_Trisector

 

DIABOLOS DECIMATOR

Rare crawling-exclusive spawns on layer 3+4. 

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 [BOSS]

An extremely powerful demon lord with multiple cosmic powers, serving as the most terrifying threat outside of the Tormentor. Original design hybridising elements of giant centipede and diabolical ironclad beetle and scarab morphology.

Wiki page:

https://arphex.miraheze.org/wiki/Diabolos_Decimator

 

THE TORMENTOR

Spawns anywhere once activated by either killing the original three bosses and encountering an initial version in the overworld, or summoning it from an altar on the bottom layer of the Crawling dimension. Can be sealed or killed with extreme difficulty.

The TORMENTOR

 [SUPERBOSS]

A threat to eclipse the wither storm. The ultimate monstrosity, something not seen in any other horror mod: A true biome-sized eldritch horror capable of tormenting all nearby players, and comes in multiple different tiers of power. This eldritch beast is so powerful that nothing else can compete, and it is more comparable to an infection mod than a single entity. However, it can be sealed (its primary target should throw a "bane of the darkness" item into a crawling portal), or defeated by some of the most powerful ranged weapons in ArPhEx after a long multi-day fight. No matter how strong you are, this entity will likely pose a major threat. Original design incorporates elements of various arthropods, especially house centipede, sea spider, scorpion, and mosquito aspects.

Wiki page:

https://arphex.miraheze.org/wiki/TORMENTOR

 

CLICK FOR A LIST OF ALL SPAWNING INFO/BIOMES

Planned additions: More Tormentor "tiers" up to tier 5. Potentially another boss for the upcoming "webrooms" dimension. Major sound improvements planned (these have not been a focus so far), and general further optimisations to existing mechanics.

 

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This mod features a wide range of high-detail, realistic arthropod mobs, focusing on those likely to induce phobias. Nearly all of them are uncommon, but many of them are strong, so beware if you encounter them!

Next three planned mob additions: Scorpion miniboss, trilobites, parachute spiders. Continuously improving existing mobs. More dungeons planned for the crawling and the overworld. Open to suggestions. 

CLICK FOR A LIST OF ALL SPAWNING INFO/BIOMES

 

CURRENT:

Most added mobs can climb walls. Some of them can spawn in large groups. Some are tameable, or spawn in special structures. Minibosses ordered from strongest to weakest.

Spider Matriarch side-boss

Spider Matriarch [SIDE-BOSS] 

Design based on on wolf spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Matriarch

Crab Constrictor miniboss

Crab Constrictor [MINIBOSS] 

Design based on on japanese spider crabs

Wiki page:

https://arphex.miraheze.org/wiki/Crab_Constrictor

Wasp Nemesis

Wasp Nemesis [MINIBOSS] 

Design based on on tarantula hawks

Wiki page:

https://arphex.miraheze.org/wiki/Wasp_Nemesis

Spider Infestor [MINIBOSS] 

Design based on on six-eyed sand spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Infestor

Arthropleura Abomination [MINIBOSS] 

Design based on on prehistoric arthropleuras

Wiki page:

https://arphex.miraheze.org/wiki/Arthropleura_Abomination

Spider Reaper miniboss

Spider Reaper [MINIBOSS] 

Design based on on golden orb weaver spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Reaper

Centipede Evictor Miniboss

Centipede Evictor [MINIBOSS]

Design based on house/cave centipedes

Wiki page:

https://arphex.miraheze.org/wiki/Centipede_Evictor

Spider Prowler miniboss

Spider Prowler [MINIBOSS]

Design based on brazillian wandering spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Prowler

Spider Black Widow Miniboss

Spider Snatcher [MINIBOSS] 

Design based on black widows

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Snatcher

Solifuge Skulker Miniboss

Solifuge Skulker [MINIBOSS] 

Design based on solifuges (sun spiders)

Wiki page:

https://arphex.miraheze.org/wiki/Solifuge_Skulker


 

Spider Larvae

Spider Larvae 

Design based on on house spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Larvae

Spider Flat

Spider Flat 

Design based on small huntsman spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Flat

Funnel Web SpiderFunnel Burrow

Spider Funnel

Design based on funnel web spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Funnel

Spider Goliath Tarantulas

Spider Goliath 

Design based on goliath birdeater tarantulas

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Goliath

Spider Brood

Spider Brood 

Design based on wolf spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Brood

Spider Jump

Spider Jump

Design based on jumping spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Jump

Spider Recluse

Spider Recluse

Design based on brown recluse spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Recluse

Spider Lunger

Spider Lunger 

Design based on giant huntsman spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Lunger

Mantis Mutilator

Mantis Mutilator

Design based on european mantises

Wiki page:

https://arphex.miraheze.org/wiki/Mantis_Mutilator

 Scorpion Striker

Scorpion Striker

Design based on desert scorpions

Wiki page:

https://arphex.miraheze.org/wiki/Scorpion_Striker

Spider Ambusher

Spider Ambusher

Design based on ogre spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Ambusher

 

Giant Centipede

Centipede Stalker 

Design based on giant centipedes

Wiki page:

https://arphex.miraheze.org/wiki/Centipede_Stalker

Centipede Evictor Larvae

Centipede Evictor Larvae 

Design based on house centipedes

Wiki page:

https://arphex.miraheze.org/wiki/Centipede_Evictor_Larvae

Millipede Marauder

Millipede Marauder

Design based on giant millipedes

Wiki page:

https://arphex.miraheze.org/wiki/Millipede_Marauder

Moth Moonchaser

Moth Moontracker

Design based on various moth species'

Wiki page:

https://arphex.miraheze.org/wiki/Moth_Moontracker

Locust Landscourge

Locust Landscourge 

Design based on gregarious locusts

Wiki page:

https://arphex.miraheze.org/wiki/Locust_Landscourge

Hornet Harbinger

Hornet Harbinger 

Designs based on asian giant hornets

Wiki page:

https://arphex.miraheze.org/wiki/Hornet_Harbinger

Dragonfly Dreadnought

Dragonfly Dreadnought 

Design based on meganeura

Wiki page:

https://arphex.miraheze.org/wiki/Dragonfly_Dreadnought

Butterfly Bewitcher variants

Butterfly Bewitcher 

Designs based on various butterfly species'

Wiki page:

https://arphex.miraheze.org/wiki/Butterfly_Bewitcher

Mosquito Morbidity

Mosquito Morbidity

Design based on asian tiger mosquitos

Wiki page:

https://arphex.miraheze.org/wiki/Mosquito_Morbidity

Long Legs Fly

Long Legs Fly

Design based on crane flies

Wiki page:

https://arphex.miraheze.org/wiki/Long_Legs_Fly

Fly Festerer

Fly Festerer 

Design based on bluebottle flies

Wiki page:

https://arphex.miraheze.org/wiki/Fly_Festerer

Long Legs

Long Legs

Design based on harvestman spiders

Wiki page:

https://arphex.miraheze.org/wiki/Long_Legs

Silverfish Spectres

Silverfish Spectre 

Design based on common silverfish

Wiki page:

https://arphex.miraheze.org/wiki/Silverfish_Spectre

Maggots

Maggot Larvae

Design based on housefly maggots

Wiki page:

https://arphex.miraheze.org/wiki/Maggot_Larvae

Cockroaches

Roach Riverspawn

Design based on american cockroaches

Wiki page:

https://arphex.miraheze.org/wiki/Roach_Riverspawn

Rhino Beetle

Beetle Bulwark

Design based on various beetle species'

Wiki page:

https://arphex.miraheze.org/wiki/Beetle_Bulwark

Beetles ticks and mites

Beetle/Tick/Mite

Design based on various tiny arthropods

Wiki page:

https://arphex.miraheze.org/wiki/BeetleTickMite

Spider Obstructer

Spider Obstructer

Design based on "coin" trapdoor spiders

Wiki page:

https://arphex.miraheze.org/wiki/Spider_Obstructer

Giant Ants

Ant Arsonist Variants

Designs based on fire ant types

Wiki page:

https://arphex.miraheze.org/wiki/Ant_Arsonist

Termite Tunnelers

Termite Tunneler Variants

Designs based on Odontotermes Formosanus types

Wiki page:

https://arphex.miraheze.org/wiki/Termite_Tunneler

Many non-standard mobs, like "hallucinations", bloodworms, sea spiders, stickbugs, venus flytraps, and more

 

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Information about the mod items and other details. ArPhEx includes many items, just as crazy as the mobs that drop them!

You can find a list of all items from the mod on the wiki here, along with all information how to obtain them (recipes, drops, and so on):

https://arphex.miraheze.org/wiki/Items

 

This mod's items are too complex to fully describe here without overloading the page with information. There are tons of new kinds of equipment with crazy special abilities (e.g. an ant commander stick that lets you command your own ant colony)

The wiki provides extensive information about all mobs and items, along with guides!

 

WIKI ITEM CATEGORY LINKS:

 

WEAPONS AND TOOLS

- OTHER ITEMS

- BLOCKS

- ARMOUR

- POWERS

 

Here's a sneak preview of some of the strongest armours and weapons included in the mod!:

Infernal Armour

Infernal Armour (holding Abyssal Blade)

Wiki page:

https://arphex.miraheze.org/wiki/Infernal_Armour

Spectral Armour

Spectral Armour (holding Ascendant Staff)

Wiki page:

https://arphex.miraheze.org/wiki/Spectral_Armour

Juggernaut Armour

Juggernaut Armour (holding Oblivion Ray)

Wiki page:

https://arphex.miraheze.org/wiki/Juggernaut_Armour

Umbral Armour

Umbral Armour (holding Judgement Blaster)

Wiki page:

https://arphex.miraheze.org/wiki/Umbral_Armour

 

Spacetime Armour

Spacetime Armour (holding Temporospatial Transmitter)

Wiki page:

https://arphex.miraheze.org/wiki/Spacetime_Armour

 

Eternal Armour

Eternal Armour (holding dual Abyss Ascendant blades)

Wiki page:

https://arphex.miraheze.org/wiki/Eternal_Armour

 

Enjoy!

ArPhEx takes some inspiration from some of the craziest mods ever made, like Lycanite's mobs, Orespawn, and Chocolate Quest. Plus, takes inspiration from Terraria.

 

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ArPhEx comes with a special dimension called "The Crawling", featuring five biomes and four layers bypassed through conquering dungeons. There are multiple dungeon-style structures that can spawn in the both the crawling and overworld dimensions. 

THE CRAWLING DIMENSION

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A beautiful yet nightmarish realm of constant survival of the fittest. The Crawling is nature at its most brutal and apathetic - surviving in lower depths of this dimension will be perilous, even with the strongest gear. Five biomes, and four vertical layers that can only be bypassed through conquering special dungeons that lead from one layer to the next! Plus dangerous weather cycles - blood rain and fog can appear.

To access this dimension, there are a few steps. First, you can craft a "Crawling Compass" item that leads you to a huge overworld structure with a sphere in the centre. Inside this sphere are four pillars that you can light with scorch charges. Once lit, simply right click on the central "Crawling Barrier" block to activate a portal that leads you to the crawling!

To leave the dimension, you can find occasional portal structures on the top layer. A third of them have stone blocks and take you to the overworld. A third have netherrack blocks and take you to the nether, and a third have end stone blocks, taking you to the end dimension. They take you to a random location each time, so each venture into The Crawling is a dangerous endeavour.

But more dangerous still is if you try to descend to the lower layers of the Crawling! 

When you're in the dimension, the Crawling Compass can lead you to dungeons on your current layer, either the nearest one to go down a level or up a level (sneak-right click to scan for dungeons to go back upwards).

 

Five biomes in the Crawling:

Crawling Canopy

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Cryptic Complex

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Decadent Desert

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Webbed Wasteland

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Tormented Tunnels

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