CurseForge · Minecraft mod
ArPhEx: BOP Integration
Integrates ArPhEx with Biomes O' Plenty by assigning mobs to fitting biomes.
Quick answer
Which ArPhEx: BOP Integration release should I use?
ArPhEx: BOP Integration ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is ArPhEx: BOP Integration required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does ArPhEx: BOP Integration ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2 need?
ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2. Change the file and its required mods may change too.
Install Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia), GeckoLib first. We found matching files for this game-version and loader setup. 23 come through another mod in the chain.
23 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add ArPhEx: BOP Integration without breaking your instance.
Built for ArPhEx: BOP Integration ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia), GeckoLib first. We found matching files for this game-version and loader setup. 23 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2. It opens that exact file at the source.
About this project
What does ArPhEx: BOP Integration add?
ArPhEx: BOP Integration expands the natural spawning of ArPhEx mobs into compatible Biomes O' Plenty biomes, so now you actually find the mobs you need/want. Full list with spawn biomes for Biomes O' Plenty can be found in this google document.
This addon does not replace or modify ArPhEx's existing spawning system. Instead, it adds selected biomes from Biomes O' Plenty mod while preserving the original spawn weight, groups sizes, and spawning behavior.
Every mob can be individually configured through the config file, allowing you to enable or disable spawns in modded biomes, adjust spawn weights and groups sizes, or choose exactly which biomes each mob can appear in.
Mod contains 2 separate config files - one for overworld spawns and one for nether spawns.

The config allows for other modded biomes to be used as well, you just need to add them yourself.
Requirements:
- Forge 1.20.1 or NeoForge 1.20.4/1.21.1
- ArPhEx mod
- Biomes O' Plenty is not actually required (unless you want the default config which is made for BOP) as the mod works with other world generation mods as well, you just need to change the config if you're using a different mod
Project description from CurseForge.
Pick your setup
ArPhEx: BOP Integration by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.20.4
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ArPhEx: BOP Integration versions and loaders
ArPhEx: BOP - NeoForge 1.21.1 - v1.0.2
arphexbopintegration-neoforge-1.21.1-1.0.2.jar
26 Aug 2026
ArPhEx: BOP - NeoForge 1.20.4 - v1.0.2
arphexbopintegration-neoforge-1.20.4-1.0.2.jar
26 Aug 2026
ArPhEx: BOP - Forge 1.20.1 - v1.0.2
arphexbopintegration-forge-1.20.1-1.0.2.jar
9 Aug 2026
ArPhEx: BOP - Forge 1.20.1 - v1.0.1
arphexbopintegration-forge-1.20.1-1.0.1.jar
22 Jul 2026
ArPhEx: BOP - Forge 1.20.1 - v1.0.0
arphexbopintegration-forge-1.20.1-1.0.0.jar
18 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.