Simple Underground

Simple Underground

Adds and elevator and a big plane in the underground.

by Andre Aquilav1.0.10level
27.5K
Downloads
2.5M
Views
September 23, 2022
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>
<!-- //------------------------------------------------------------ END MULTIPLAYER YES --->

<style>
.mod-container {
--sf-gold: #f6ad55;
--sf-under: #48bb78;
--sf-deep: #2d3748;
--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-under);
text-transform: uppercase;
text-align: center;
border-bottom: 3px double var(--sf-under);
padding-bottom: 10px;
margin-bottom: 25px;
text-shadow: 2px 2px #000;
}
.under-banner {
background: linear-gradient(90deg, #22543d 0%, #48bb78 100%);
color: #fff;
padding: 15px;
text-align: center;
border: 2px solid #000;
margin: 20px 0;
font-weight: bold;
text-transform: uppercase;
letter-spacing: 2px;
}

.feature-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px;
margin: 25px 0;
}
.feature-card {
background: #1a1a1a;
padding: 15px;
border-bottom: 4px solid var(--sf-under);
}
.feature-card b { color: var(--sf-gold); display: block; margin-bottom: 5px; }

.command-panel {
background: #1a202c;
border: 2px dashed var(--sf-under);
padding: 20px;
margin: 25px 0;
}
.cmd-item { margin-bottom: 12px; font-size: 0.9rem; }
.cmd-code { background: #000; color: var(--sf-under); padding: 2px 8px; font-family: monospace; font-weight: bold; }

.mod-container img {
width: 100%;
border: 4px solid #000;
display: block;
margin: 15px 0;
}

.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;
}
</style>

<div class="mod-container">
<h1>Simple Underground</h1>
<p style="text-align:center;">Unlock a massive, flat building plane beneath the world. Perfect for sprawling train hubs, clean logistics layers, and expansive belt highways.</p>

<div class="under-banner">
🏗️ SUB-SURFACE EXPANSION: READY 🏗️
</div>

<div class="feature-grid">
<div class="feature-card">
<b>🚠 Dedicated Elevator</b><br>
Seamless transit between your surface factory and the underground.
</div>
<div class="feature-card">
<b>🛤️ Endless Flatland</b><br>
A perfectly level plane at Z = -24450 for stress-free building.
</div>
</div>

<img src="https://i.imgur.com/aPgere6.png" alt="Underground Plane Showcase">

<div class="command-panel">
<h3 style="color:var(--sf-under); margin-top:0; text-transform:uppercase; font-size:1rem;">System Commands (Press Enter)</h3>
<div class="cmd-item"><b>Adjust Depth:</b> <span class="cmd-code">/simpleunderground [Z-Height]</span> Example: /simpleunderground -10000 </div>
<div class="cmd-item"><b>Toggle Plane:</b> <span class="cmd-code">/simpleunderground UndergroundSpawn</span> Removes all existing underground planes and spawns a new plane at the correct downstairs places. New Elevators will spawn planes. </div>
<div class="cmd-item"><b>Hide Plane:</b> <span class="cmd-code">/simpleunderground NoUndergroundSpawn</span> Removes all existing underground planes. New Elevators will not spawn planes.</div>
<div class="cmd-item"><b>Full Reset:</b> <span class="cmd-code">/simpleunderground DestroyAll</span> Removes all existing underground planes and elevators. </div>
</div>

<img src="https://i.imgur.com/TZZbU5n.gif" alt="Logistics Flow Demo">

<div style="background:#1a1a1a; padding:15px; border-left: 4px solid var(--sf-gold); margin: 25px 0;">
<b>💡 Integration Tip:</b> Best used with <b>Small Train Stations</b> and <b>Underground Belts</b> for a truly hidden logistics network. If the fog is too thick, use the console command <span style="color:var(--sf-under);">r.fog 0</span>.
</div>

<div style="border-top: 1px solid #444; padding-top: 15px; font-size: 0.8rem; color: #aaa; margin-top: 25px;">
<b>Pro-tip:</b> Place elevators to automatically generate building planes at the designated height.
</div>
</div>

<div class="aquila-footer">
<p style="margin-bottom: 25px; font-weight: bold; color: var(--sf-gold);">
✨ There's more to this world than what's on the surface. Dig deep, Pioneer!
</p>

<div class="btn-container">
<a href="https://discord.gg/azC9UtsJ2K" target="_blank" class="social-btn discord">
<div class="btn-text">NOG DISCORD<span class="sub-text">Join us for support and collaborative modding!</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 // SUBTERRANEAN DIVISION</p>
</div>
</div>

Versions

v1.0.10release
1.5K downloadsJune 7, 2026
v1.0.9release
3.3K downloadsDecember 9, 2025
v1.0.8release
3.7K downloadsMarch 29, 2025
v1.0.7release
3.1K downloadsNovember 5, 2024
v1.0.6release
1.6K downloadsOctober 10, 2024

How to Install Simple Underground 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 "Simple Underground". 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

Simple Underground not working after update – what to do?

After a Satisfactory update, mods need to be updated. Check ficsit.app whether Simple Underground 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.

Simple Underground 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 Simple Underground v1.0.10 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.

Is Simple Underground compatible with other Satisfactory mods?

Simple Underground 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 Simple Underground Server

Play Simple Underground 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
v1.0.10
Created
September 23, 2022
Last Updated
August 22, 2026