SmoothPlume - Shader-based Engine and RCS Thrust Effect Overhaul and Wingtip Vortice Removal

⭐ ⭐ (149 endorsements) 📥 7,768 downloads 📌 v2 📅 7/12/2021
🟡 Updated this year

By Khaak_Slayer aka PurpleFire · Visuals and Graphics

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 6/13/2026 📅 Created: 7/12/2021

🔍 Analysis

  • 👍 1.9% endorsement rate — high engagement, a strong quality signal
  • ✅ Updated 3 days after the latest game patch — actively maintained
  • 🏆 #16 of 90 Visuals and Graphics mods in this game by downloads

📋 About This Mod

After a very long period of development, version 2. 0 is now complete; this is a full remake and a significant upgrade to visual fidelity.

All ships are affected, with L and XL utilising a separate effect to the S and M engines, Boron and Xenon ships have a unique effect also.

Wingtip vortices have also been removed from all ships as they make no sense in space and I find them very annoying, if you want to restore them and have installed manually, you may delete the trail_effects.xml file from the libraries folder, but you will have to extract the cat file first.

I spent a while trying to fix some underlying vanilla game bugs but I was mostly unsuccessful due to how Egosoft have the files set up, some known bugs:

A couple of small ships' engine plume geometries have a keyframe timing issue baked into them which causes the texture to hang on a single frame, I tried everything but I was unable to get a fix to work so I hid it with the shader, it shouldn't be obvious.

A couple of larger boron ships are incorrectly set to have their manoeuvring thrusters render the same effect as the main engine, resulting in very bright RCS plumes, some might consider this a bonus as it doesn't look too bad on the heavies. I tried a lot, no fixes worked.

The Irukandji's wing-mounted engines are aligned poorly and clip outside the wing.

Large Boron ships using the Frontier engines do not display a plume, I expect they'll patch this.

Some ships using a particular cylindrical plume geometry (I noted the SE and PE as being most obvious) have a floating ring around the midsection of the effect which I didn't notice in the vanilla game.

Please report any other bugs, I hope you enjoy the mod!

Check out my other brand new mod which replaces the ugly dock forcefields: More Atmospheric Shield

🤖 AI-enhanced — based on mod data

SmoothPlume is a visual overhaul for Kerbal Space Program that rebuilds engine and RCS plume effects using shaders, and removes wingtip vortices. It aims to match the game's high-quality graphics. With 149 endorsements and 7,768 downloads, it's a moderately popular cosmetic mod for players seeking improved thruster visuals.

✨ Key Features

Complete rebuild of engine plume effects for all ships using shaders
Complete rebuild of RCS plume effects for all ships using shaders
Removes wingtip vortices from all ships

📊 Pros & Cons

✅ Pros

  • Shader-based plumes look way better than stock, brings visuals up to par with other high-quality graphics mods
  • Removes those annoying wingtip vortices that break immersion
  • Solid community support with 149 endorsements and nearly 8k downloads

⚠️ Cons

  • Only touches plume effects and vortices—if you want other visual upgrades, this won't cover them
  • Shader-based effects might hit performance on lower-end rigs, especially with multiple ships on screen
  • Compatibility risk with other visual mods that alter engine or RCS effects—check your load order
🎯 Is This For You?
For KSP players who want their engines and RCS to look as good as the rest of the game's graphics. If you're into visual polish and don't mind a potential performance hit, this is for you. Skip if you're fine with stock plumes or prefer gameplay-focused mods.
📦 Install:Easy· Under 1 minute

💡 Beginner Tips

  • Make sure you have the latest version of KSP installed, as mods can break with updates.
  • If you use other visual mods like RealPlume, test for conflicts—this mod might override or be overridden.
  • Check the mod's forum thread for any known issues with specific ship parts or DLC.

📊 Mod Details

Game
X4foundations Mods
Author
Khaak_Slayer aka PurpleFire
Version
2
Downloads
7,768
Endorsements
149
Category
Visuals and Graphics
Created
7/12/2021
Updated
6/13/2026

🔧 How to Install X4: Foundations Mods

Download from Nexus Mods.

📖 Full step-by-step install guide for X4: Foundations →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for X4: Foundations commands, item IDs, and more.

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