Underground Belts

Underground Belts

You could place as many "x" inputs for "1" output and vice versa.

by Andre Aquilav3.0.28logistics
165.9K
Downloads
3.6M
Views
February 15, 2021
Created
August 22, 2026
Updated

Description

<center><img src="https://github.com/DellAquila/Layout/raw/main/New/CABECALHO.png"></center><br/>

<style>
.multiplayer-banner {
background-color: #4caf50;
border-top: 4px solid #000;
border-bottom: 4px solid #000;
margin: 20px 0;
padding: 10px 0;
display: flex;
align-items: center;
justify-content: center;
gap: 15px;
width: 100%;
}
.multiplayer-text {
color: #ffffff !important;
font-weight: bold;
text-transform: uppercase;
letter-spacing: 2px;
font-size: 1.1rem;
text-shadow: 2px 2px 0px #000;
}
.multiplayer-sub {
background: #000;
color: #4caf50 !important;
padding: 2px 10px;
font-size: 0.8rem;
font-weight: bold;
text-transform: uppercase;
border: 2px solid #fff;
}
.thumb-icon {
font-size: 1.5rem;
filter: drop-shadow(2px 2px 0px #000);
}
</style>

<div class="multiplayer-banner">
<span class="thumb-icon">👍</span>
<div class="multiplayer-text">Multiplayer Compatible</div>
<div class="multiplayer-sub">Everyone!</div>
</div>

<style>
.mod-container {
--sf-gold: #fa9549;
--sf-belt: #8b4513;
--sf-bg: #2d2d2d;
--sf-border: #000;
max-width: 850px;
margin: 20px auto;
background-color: var(--sf-bg);
color: #e0e0e0;
padding: 30px;
border: 4px solid var(--sf-border);
box-shadow: 10px 10px 0px var(--sf-border);
}
.mod-container h1 {
color: var(--sf-gold);
text-transform: uppercase;
text-align: center;
border-bottom: 3px double var(--sf-gold);
padding-bottom: 10px;
margin-bottom: 25px;
}
.mod-container .feature-card {
background: #1a1a1a;
border-left: 4px solid var(--sf-belt);
padding: 12px;
margin-bottom: 10px;
font-size: 0.85rem;
}
.mod-container h2 {
color: var(--sf-belt);
font-size: 1.2rem;
border-left: 4px solid var(--sf-belt);
padding-left: 10px;
margin-top: 25px;
}
.mod-container .step-box {
background: #252525;
border: 1px solid #444;
padding: 15px;
margin: 10px 0;
font-size: 0.85rem;
}
.mod-container .server-note {
background: #3d2b1f;
color: var(--sf-gold);
padding: 5px 10px;
font-size: 0.75rem;
font-weight: bold;
display: inline-block;
margin-bottom: 5px;
}
.mod-container .gallery img {
width: 100%;
display: block;
border: 4px solid #000;
margin-bottom: 15px;
}
.multiplayer-banner {
background-color: #4caf50;
border-top: 4px solid #000;
border-bottom: 4px solid #000;
margin: 20px 0;
padding: 10px 0;
display: flex;
align-items: center;
justify-content: center;
gap: 15px;
width: 100%;
}
.multiplayer-text {
color: #ffffff !important;
font-weight: bold;
text-transform: uppercase;
letter-spacing: 2px;
font-size: 1.1rem;
text-shadow: 2px 2px 0px #000;
}
</style>

<div class="mod-container">
<h1>Underground Belts</h1>
<p style="text-align:center;">Efficiently manage your item flow and declutter your factory floor with flexible underground logistics.</p>


<p style="font-size:0.8rem; text-align:center; opacity:0.8; margin-bottom:20px;">
<i>PS: The 3 old versions of the Underground Belt are still available to build.</i>
</p>

<div class="gallery">
<img src="https://i.imgur.com/qDSgzYN.png">
</div>


<div style="margin: 30px 0; text-align:center;">
<img src="https://github.com/DellAquila/Layout/raw/main/Videos_Up.png" style="width:100%;">
<a href="https://www.youtube.com/watch?v=40fk83OtYnc" target="_blank">
<img src="http://img.youtube.com/vi/40fk83OtYnc/0.jpg" style="width:100%; border:4px solid #000;">
</a>
<img src="https://github.com/DellAquila/Layout/raw/main/Videos_Down.png" style="width:100%;">
</div>


<h2>How to Use (New Networks)</h2>

<div class="step-box">
<b>Standard Belt (1:1):</b><br>
Place Input → Place Output (or vice versa). The link is created automatically.
</div>

<div class="step-box">
<b>Underground Splitter (1 Input to Many Outputs):</b><br>
1. Place <b>all</b> desired Outputs first.<br>
2. Place the single Input last.
</div>

<div class="step-box">
<b>Underground Merger (Many Inputs to 1 Output):</b><br>
1. Place <b>all</b> desired Inputs first.<br>
2. Place the single Output last.
</div>

<h2>Advanced Management</h2>

<div class="feature-card">
<span class="server-note">DEDICATED SERVERS: MAY NEED A RE-LOG</span><br>
<b>Adding to Existing Networks:</b> Build an Input/Output, interact to make it <i>Active</i>, then interact again to select your group.
</div>

<div class="feature-card">
<b>Renaming & Merging:</b> Interact with any belt to write a new name. If the name exists, you can "Merge" groups via the button or dropdown menu.
</div>

<div class="gallery">
<img src="https://i.imgur.com/ptVc1wH.png">
<img src="https://i.imgur.com/wP1IWdi.png">
</div>

<div class="feature-card">
<b>Buffer Control:</b> Change the <i>Output Slot Max</i> (up to 48 slots) to give all outputs in a group a larger internal buffer.
</div>

<div class="feature-card">
<b>Visual Markers:</b> Click "Show Markers" in the UI to see colorful spheres over all belts belonging to the same group.
</div>


<div class="gallery">
<img src="https://i.imgur.com/QxKEhuZ.png">
<img src="https://i.imgur.com/vGG97GO.png">
</div>

<div style="border-top: 1px solid #444; padding-top: 15px; font-size: 0.8rem; color: #aaa;">
<b>Credits:</b> Icons, UI, and Graphic advice from <a href="https://discord.gg/xkVJ73E" style="color:var(--sf-gold);">Deantendo: The UI guy!</a>
</div>

<p style="text-align:center; font-size:0.85rem; opacity:0.8; margin-top:25px;">
<i>Honest note: Underground logistics can be a lifesaver for clean factory builds. Enjoy the extra space!</i>
</p>
</div>

<!-- //------------------------------------------------------------ START FOOTER DONATIONS -->
<style>
.aquila-footer {
--sf-bg: #1a1a1a;
--sf-border: #000;
--sf-gold: #f2c94c;
--discord: #3b4e8d;
--patreon: #ff6058;
--steam: #f2f2f2;
--pix: #f2d600;
--paypal: #249ce2;
--youtube: #ff0000;
max-width: 850px;
margin: 40px auto;
background-color: var(--sf-bg);
padding: 30px;
border: 4px solid var(--sf-border);
border-top: 6px solid var(--sf-gold);
box-shadow: 10px 10px 0px var(--sf-border);
text-align: center;
}
.aquila-footer .btn-container {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 12px;
margin-bottom: 20px;
}
.aquila-footer .full-btn { grid-column: span 2; }
.aquila-footer .social-btn {
display: flex;
align-items: center;
justify-content: center;
padding: 12px;
border: 3px solid #000;
box-shadow: 4px 4px 0px #000;
text-decoration: none;
transition: transform 0.1s;
}
.aquila-footer .social-btn:hover {
transform: translate(-2px, -2px);
box-shadow: 6px 6px 0px #000;
}
.aquila-footer .btn-text {
color: #ffffff !important;
text-transform: uppercase;
font-weight: bold;
font-size: 0.9rem;
line-height: 1.2;
}
.aquila-footer .discord { background: var(--discord); }
.aquila-footer .patreon { background: var(--patreon); }
.aquila-footer .youtube { background: var(--youtube); }
.aquila-footer .steam { background: var(--steam); }
.aquila-footer .steam .btn-text { color: #d35400 !important; }
.aquila-footer .paypal { background: var(--paypal); }
.aquila-footer .sub-text {
display: block;
font-size: 0.65rem;
opacity: 0.9;
font-weight: normal;
margin-top: 4px;
text-transform: none;
}
.aquila-footer .footer-meta {
border-top: 1px solid #333;
margin-top: 20px;
padding-top: 15px;
}
</style>

<div class="aquila-footer">
<p style="margin-bottom: 25px; font-weight: bold; color: var(--sf-gold);">
♥ I'm having a lot of fun making these mods! I hope you're enjoying them more than they make you angry! :)
</p>

<div class="btn-container">
<a href="https://discord.gg/xkVJ73E" target="_blank" class="social-btn discord">
<div class="btn-text">
AQUILA INDUSTRIAL
<span class="sub-text">Found a bug? Have a wild idea? Join the Discord!</span>
</div>
</a>

<a href="https://store.steampowered.com/app/1958750/Hexfactory/" target="_blank" class="social-btn steam">
<div class="btn-text">
HEXFACTORY ON STEAM
<span class="sub-text" style="color:#000 !important">Check out the little game I built from scratch!</span>
</div>
</a>

<a href="https://www.patreon.com/AndreAquila" target="_blank" class="social-btn patreon">
<span class="btn-text">
BECOME A PATRON
<span class="sub-text">Fuel my coffee addiction so I can keep coding until 3 AM.</span>
</span>
</a>

<a href="https://www.paypal.com/donate?hosted_button_id=TD7ME2KYDMT7G" target="_blank" class="social-btn" style="background: var(--pix);">
<div class="btn-text" style="color:#000 !important;">
☕ BUY ME A COFFEE!
<span class="sub-text" style="font-weight: bold; color: #000 !important;">Support with $1 — it will make my day!</span>
</div>
</a>

<a href="https://www.youtube.com/@AndreAquila" target="_blank" class="social-btn youtube full-btn">
<span class="btn-text">
▶ SUBSCRIBE TO MY YOUTUBE CHANNEL
<span class="sub-text">See mod showcases, factory tours, and development updates!</span>
</span>
</a>

<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=U96NB4W469FR2&source=url" target="_blank" class="social-btn paypal full-btn">
<span class="btn-text">
Donate with PayPal
<span class="sub-text">Every bit helps keep the cpu humming and the updates coming. Thank you!</span>
</span>
</a>
</div>

<div class="footer-meta">
<p style="font-size: 0.75rem; color: #555; letter-spacing: 2px; margin-top: 5px; font-weight: bold;">
AQUILA INDUSTRIAL // EXTERNAL MODDING DIVISION
</p>
</div>
</div>

Versions

v3.0.28release
5.4K downloadsJune 7, 2026
v3.0.27release
8.9K downloadsDecember 30, 2025
v3.0.26release
5.3K downloadsOctober 22, 2025
v3.0.25release
436 downloadsOctober 21, 2025
v3.0.24release
125 downloadsOctober 21, 2025

How to Install Underground Belts on Your Server

1

Order Satisfactory Server

Order a Satisfactory server with at least 4 GB RAM (6 GB recommended). For multiplayer: per 4 players.

2

Install Mod

Open the mod manager in the dashboard and search for "Underground Belts". Installation dependencies are installed automatically.

3

Restart Server

Restart the server so the mod is loaded. Players need to have the mod installed locally as well.

Frequently Asked Questions

Underground Belts not working after update – what to do?

After a Satisfactory update, mods need to be updated. Check ficsit.app whether Underground Belts has been updated for the new game version. With Mado Hosting: open the mod manager and click "Update All". If the mod hasn't been updated yet, temporarily remove it so the server starts.

Underground Belts causing crashes in multiplayer – solution

Most common cause: all players must have exactly the same mod version installed. Check server logs for "ModMismatch" or "Version Conflict". Ensure all players use Underground Belts v3.0.28 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.

Is Underground Belts compatible with other Satisfactory mods?

Underground Belts uses the Satisfactory Mod Loader (SML). Generally, SML-based mods are cross-compatible, but mods modifying the same game systems can cause conflicts. Test new mod combinations on a backup save. The Mado dashboard automatically detects known conflicts and warns you.

Rent Underground Belts Server

Play Underground Belts on your own Satisfactory server with mod support.

Recommended RAM
6 GBfrom €7.80/mo
Minimum 4 GB | from €5.20
Order Server Now

Mod Information

Author
Andre Aquila
Latest Version
v3.0.28
Created
February 15, 2021
Last Updated
August 22, 2026
Source Code
GitHub →