CSEP Presents The Experiment - NEW Quest Mod
⚪ Last updated 2024⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 0.6% endorsement rate
- 🏆 #2 of 34 Quests and Adventures mods in this game by downloads
📋 About This Mod
-
[]Roughly over one and a half hours of quest content!
[
]Replayability with multiple endings and choices that change the course of your playthrough![]Over 400+ lines of fully voiced professional grade human voiced dialogue! (No AI was used in the creation of this mod)
[]A full embracement of Extended Dialogue Interface system to bring back F3/NV style dialogue! (XDI is required)
[]A split narrative that changes based on your choices!
[]The return of RPG elements like skill and perk checks!
[]Unique weapons earned by your choices leading to certain endings!
[]Custom composed music!
- Fun unique outfits!
The quest starts once you enter a new house at the south end of Natick Banks.
I recommend you bring some decent gear tho, there's some tough challenges down there.Extended Dialogue Interface is REQUIRED for dialog to function.
Development:
Phineas Kube (Pigness) - Pulling own hair out
Voice Acting Talent:
Soldier Hobbes - Captain Kilgore & Dr. Elias Keim
Ben Johnson (Benjango) - Sergeant Clay & Director Brynes
Cory Coogan - Private Wolfe
Veta Pheonix - Dr. Judith Whiteford
Henry Martin - Colin MacCaffrey
Assets/Art:
jkruse05 - RascalArt - AidanWatts3D - JViole7 - justreddz - DefaltTheFixer - DegenerateDak
Music/Sound:
RadioFloyd - xrendermanx
LET ME KNOW IF I FORGOT YOU!
My Patrons:
Michael Kenner - Radking - Its_Strong - Mondo - OscarN1N71 - Degrie
nuclearPANDA86 - Bdazzle - Daniel Ramirez xrendermanx - Jonathan Hamlet
Glasma - Sgt. Robo - Paxton Mc - Aaron Beatty - Brian Ho - Anthony Marangi
Y. J Double - Diacute - Charles - gino gullion - Urukage -
Clemdiddly
p s - Ian Morris - Djiant
And maybe you?
Pigness - Screenshots
God and Jesus Christ for giving me the opportunity to do work like this with amazing talent.
And all of you for your support and interest in my work <3
Consider supporting me on Patreon
Join our Discord
Check me out on Youtube
Check out my companion mo
CSEP Presents The Experiment is a quest mod for Fallout 4 that plunges you into an underground conflict where your choices determine who lives and dies. With 883 endorsements and over 136,000 downloads, it's a community favorite for players seeking narrative-driven adventures with meaningful decisions.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Community-approved with 883 endorsements and over 136k downloads
- Choices matter—your decisions decide who lives and dies
- From the Commonwealth Story Expansion Project, known for quality quest mods
⚠️ Cons
- Last updated March 2024—may not be compatible with the latest Fallout 4 patches
- Requires a new playthrough or careful save management to experience fully
For Fallout 4 players who crave story-driven quests with branching narratives and moral dilemmas. If you're a completionist who wants to see all outcomes, this is for you. Skip if you prefer combat-focused mods or don't like making tough choices.
💡 Beginner Tips
- Make a save before starting the quest to explore different choices without replaying the whole game.
- Check the mod's forum posts for any known issues or load order recommendations.
- If you use a mod manager, let it handle the installation to avoid file conflicts.
📊 Mod Details
- Game
- Fallout 4 Mods
- Author
- Commonwealth Story Expansion Project
- Version
- 1.1
- Downloads
- 136,314
- Endorsements
- 883
- Category
- Quests and Adventures
- Created
- 3/21/2024
- Updated
- 3/31/2024
🔧 How to Install Fallout 4 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 4 →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 4 commands, item IDs, and more.
Keep browsing — more Fallout 4 mods await