HDT Physics Extensions
⚪ Last updated 2014⚠️ Install Order · 4 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview
🔍 Analysis
- 👍 3.2% endorsement rate — high engagement, a strong quality signal
- 🏆 #1 of 46 Patches mods in this game by downloads
📋 About This Mod
What is the HDT Physics Extension for Skyrim?
It is an SKSE plugin that applies the existing Havok physics engine to other uses in skyrim. Swishing hair, flowing skirts, or the ever popular bouncing boobs.
When Skyrim was originally released, the extent of the use of the Havok physics engine was restricted to things bouncing around; whether dead bodies, the odd skull, or a room full of weapons. If you wanted a cape that flowed when you ran, it would have been an animation that detailed the movement. While this simulates realism, it isn't realism.
HDT Physics Extension alleviates the problems associated with animation by actually using the physics engine that is part of the retail game. Through some creative use of SKSE, HydrogensaysHDT (the author of the Physics Extension plugin) has provided a set of tools that create game physics objects that interact and respond to the world around them. A ponytail can bounce off a womans back, a cape can flow in any direction and boobs can bounce around and react to touch.
Demo Videos
NSFW: DailyMotion DailyMotion YouTube
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Installation and Support
Install and customization docs, ongoing support, skse source code:
Google Code.
If you are having trouble with the mod in one way or the other, perform the instructions as shown there before posting the support thread here.
Addons
Here is a list of known mods somehow related to HDT-PE. If you have something to add to the list, please post or pm me. Adding HDT-PE to the title of your mod will help tremendously.
HDT Physics Extension Addon Mods
Other Stuff
Notes
I decided to release it here when I finished a visual editor before, but it seem that I have no time to do this.
v14. 28 seem stable enough.
Future work: weapon system a visual editor
About permission:
Anyone can make mod base on it.
The only thing you need to do is add my name to credit.
Thanks:
canderes for his Havok Content Tools tutorals.
monsto's work on docs and evangelism.
and everyone who make mods base on it.
Credits:
Havok Physics ← Obviously the mod's price is less than $10. 00(It's free!!!)
You are not all
HDT Physics Extensions is an SKSE plugin that applies Havok physics to Skyrim, enabling dynamic hair, skirts, and body physics. With 237,446 endorsements and 7.4 million downloads, it's a foundational mod for physics-based customization, though it hasn't been updated since 2014.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Massive community trust — 237k endorsements and 7.4M downloads prove it's a staple
- Enables the iconic physics effects modders build on, like bouncing boobs and flowing cloth
- Works with the existing Havok engine, so it's stable and performance-friendly
⚠️ Cons
- Last updated in 2014 — likely outdated for the latest Skyrim versions and SKSE builds
- No detailed instructions or compatibility notes in the description, so you're on your own for setup
- As a base plugin, it does nothing alone; you'll need additional mods to see effects
For Skyrim modders who want to add realistic physics to characters and clothing. Essential if you're building a mod list with physics-based armor or hair. Skip if you're a casual player looking for a plug-and-play visual upgrade — this is a framework, not a finished product.
💡 Beginner Tips
- Make sure you have SKSE installed and launch the game through SKSE's loader, or the plugin won't activate.
- Pair this with a physics-enabled body mod like CBBE or UUNP to see the effects on characters.
- Check the mod's forum posts for compatibility notes with your Skyrim version, since it's old.
📊 Mod Details
- Game
- Skyrim LE Mods
- Author
- HydrogensaysHDT
- Version
- 14.28
- Downloads
- 7,414,079
- Endorsements
- 237,446
- Category
- Patches
- Created
- 5/13/2014
- Updated
- 5/16/2014
🔗 Required By 117 Mods
These mods list this mod as a dependency.
🧩 Commonly Used Together
Users add these mods to the same collections — a real compatibility signal, not an AI guess.
🔧 How to Install Skyrim LE Mods
Download from Nexus.
📖 Full step-by-step install guide for Skyrim LE →
Visit the official mod page for specific installation instructions for this mod.
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