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The Unstable SMP Simulator logo

The Unstable SMP Simulator

Modpack

MOST UPDATED Unstable Simulator This is a Minecraft modpack page for the Unstable SMP Battle Simulator, bundling CarpetPVPMaps’ battle maps with pre-installed PvP and performance mods so players can install and play instantly without manual setup.

Type

Modpack

Modrinth Downloads

134,818

Modrinth ID

zHP6LZ7W

Last Updated

Jul 29, 2026

Description

Unstable SMP: The LAW

Image from Wemmbu


📦 About

I made this modpack for players to install Unstable Simulator more easily — without the tedious process of installing maps, selecting mods, and configuring everything manually.

All the necessary mods for PvP and optimization are pre-installed.


🔀 Version Differences

Version Simulator Type
1.21.11-x CarpetPVP-based simulators
Vex-1.21.11-x Vexbot-based simulators

🤖 Vexbot Simulators (Vex-1.21.11-x)

  • Lakerek VS Wemmbu Simulator
  • Law End Island Defense Simulator
  • Mist Simulator
  • Smuggler Path Law Fight
  • Underworld Simulator
  • Warden VS Wemmbu
  • Zam Invasion Simulator
  • Ocean Rangers Simulator
  • Unstable SMP Tournament
  • The Council Simulator
  • Definitive FlameFrags vs Wemmbu Simulator
  • Combat Master Training Simulator
  • Purgatory Vs Spokeishere Iron Simulator
  • Jadenman Vs Wemmbu Simulator
  • Theobaldthebird Vs Shoebilly Simulator

if ur bots arent spawning do /vexbot settings advancedspawn true

fixed bot not attacking Vex-1.21.11-6.2

❌ Not included due to max file size: Null Simulator

All Credits to MeteorIsaac, Novit PvP Maps, solyn, and CarpetSimulators


🗺️ CarpetPVP Maps (1.21.x & 1.21.11-x)

All Credits to CarpetPVPMaps

Map Link
Unstable SMP Final Law Battle Simulator Download
2v1000 Law Battle Simulator Unstable SMP Download
Unstable SMP Great Sea Law Battle Simulator Download
Unstable SMP Tournament Simulator (FREE) Download
Cindercrest Battle Simulator —

❌ Not included due to max file size: Unstable SMP Experience

Many of these maps features like mace bot will not work at 1.21.11

🛒 You can buy more maps from CarpetPVPMaps Patreon

⚠️ You need minimum 18 render distance and simulation distance for these maps to work


🧩 Mods

Mod Category
Fabric API Core
Carpet Core
Modify Player Data Core
Carpet crit fix PvP Fix
Carpet mace fix PvP Fix
Wither Death Sounds QoL
ukulib Library
uku's Armor HUD QoL
BetterHurtCam QoL
Sodium Performance
Lithium Performance
Alternate Current Performance
AppleSkin QoL
and more.. —

👥 Multiplayer

You can use Essential to play with others!

⚠️ Your friends need to have the same modpack installed too.


💻 Custom Commands

Command Description
/trigger lobby Teleports you back to the lobby
/trigger stab Gives you orbital stab shot
/trigger nuke Gives you orbital nuke shot

🎬 Showcase

<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/9CYqp5DdcUw" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>

Compatibility

Mod Loaders

Fabric

Game Versions

1.21 1.21.11

Recommended Gear

Affiliate

Hardware and extras that pair well with this modpack.

As an Amazon Associate I earn from qualifying purchases.

Screenshots

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Contained Mods (24)

Fabric API

Fabric API

Core API library for the Fabric toolchain

Mod 525,171,075
ukulib

ukulib

Small Utility Mod for Uku's Mods.

Mod 14,976,718
Lithium (Fabric/NeoForge)

Lithium (Fabric/NeoForge)

An optimization mod for Minecraft which improves server performance significantly.

Mod 243,302,314
Mod Menu

Mod Menu

Adds a mod menu to view the list of mods you have installed.

Mod 243,768,149
Sodium Extra

Sodium Extra

Features that shouldn't be in Sodium

Mod 181,734,636
Sodium

Sodium

The fastest and most compatible rendering optimization mod for Minecraft. Now available for both NeoForge and Fabric!

Mod 411,868,794
ImmediatelyFast

ImmediatelyFast

Speed up immediate mode rendering in Minecraft

Mod 331,976,895
Entity Culling Fabric/Forge

Entity Culling Fabric/Forge

Using async path-tracing to hide BlockEntities/Entities that are not visible

Mod 425,284,963
MaLiLib

MaLiLib

A library mod required for masa's client-side mods

Mod 58,884,139
Iris Shaders

Iris Shaders

A modern shader pack loader for Minecraft intended to be compatible with existing OptiFine shader packs

Mod 192,724,990
AppleSkin

AppleSkin

Adds some useful information about food/hunger to the HUD

Mod 520,631,185
Clumps

Clumps

Clumps XP orbs together to reduce lag

Mod 421,723,194
Modify Player Data

Modify Player Data

This mod allows Minecraft's data commands (/data, /execute store, etc.) to modify player data

Mod 960,808
Text Placeholder API

Text Placeholder API

Placeholder and Text manipulation library for your Minecraft mods.

Mod 74,024,632
Immersive Optimization

Immersive Optimization

A lightweight entity-tick-scheduler for doubling your TPS.

Mod 19,700,907 111.6K this week
VexBot - PvP Against Bots

VexBot - PvP Against Bots

Super smart Minecraft bots.Their better than PvP BOT

Mod 255,264
Unstable Generation

Unstable Generation

This terrain generation mod mimics Unstable SMP’s world generation. It adds Amplified (62,000 blocks away), the Great Se...

Mod 109,131
Orbital Strike Cannon | DataPack | Mod | Plugin

Orbital Strike Cannon | DataPack | Mod | Plugin

This DataPack/mod adds an orbital cannon, it can be called with a command/special fishing rod

Mod 774,753
BetterHurtCam

BetterHurtCam

nohurtcam but better

Mod 4,041,959
uku's Armor HUD

uku's Armor HUD

Minimalist vanilla-like widget to display your armor items and their durability. Forked by uku.

Mod 10,016,744
FerriteCore

FerriteCore

Memory usage optimizations

Mod 165,209,837
HeroBot

HeroBot

Framework for fabric based server side players (and extra helpful settings)

Mod 1,889,614
Explosion Breaks No Block

Explosion Breaks No Block

A simple utility mod that allows you to toggle whether explosions break blocks (still cause damage) and whether explosio...

Mod 482,799
Wither Death Sounds

Wither Death Sounds

a Wither Spawning Sound when a player dies just like Unstable SMP

Mod 115,712

External Resources