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Unstable SMP Simulator project artwork

Modrinth · Minecraft modpack

Unstable SMP Simulator

All of the Minecraft Simulators (Unstable, Bliss, Manhunt etc) you'll ever need with new Sims automatically updated without needing to change the modpack

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Unstable SMP Simulator release should I use?

Updated today
Latest stable file Fixed bug
Game version 1.21.11
Loader Fabric 0.18.6

Fixed bug is a complete pack release for 1.21.11 with Fabric 0.18.6. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 24 mods in this pack file.

Pack setup

How should I set up Unstable SMP Simulator for players and a server?

Use Fixed bug as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.

Client instance Install Fixed bug
Dedicated server setup Match Fixed bug
Pack loader Fabric 0.18.6

A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.

Referenced mods 24
Client only 11
Server only 5
Not labelled 8

These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.

What are the server requirements for Unstable SMP Simulator?

Fixed bug. Change the pack release and its contents or setup may change too.

24 mods in this pack file

The selected pack release is Fixed bug. That file is for Minecraft 1.21.11 with Fabric 0.18.6. It contains 24 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.

About this project

What kind of pack is Unstable SMP Simulator?

Please read below BEFORE YOU DOWNLOAD!!

There is a version difference


If u want any Sims added or find a bug about the modpack pls submit it here

When Import Sim fail to load, try again on different wifi or mobile hotspot

I don't add paid maps!!


Modpack Latest Update (YYYY-MM-DD)

Vexbot2 + Herobot: 2026-11-05

Vexbot3 + Carpet: 2026-11-10


Unstable SMP: The LAW

Image from Wemmbu


Modrinth

📦 About

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

All the necessary mods for PvP are pre-installed with Auto Updating Simulators.

Check out my Mod Version of Unstable Simulators "Under Review"


🔀 Version Differences

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

Vexbot Simulators (Vex-1.21.11-x)

From Vex-1.21.11-7.x maps will not be included in the Modpack.

Instead there will be a button Import Simulators at the world select screen.

It might take a while due to the maps total sizes (few Gigabytes), so if U don't have time or whatever you can just use Vex-1.21.11-6.2 instead

Note: Vex-1.21.11-6.x will not be updated due to Modrinth Max File Limit (~500MB)

So please Press Import Simulators at the world select screen

Also you DON'T need to update the modpack to get the new simulators just repress the Import Simulators and Import Kits button since Vex-1.21.11-7.3

Maps (Vex-1.21.11-7.x ~ )
  • Bat vs Itzrealeme
  • Remastered FlameFrags Simulator v2.1
  • Definitive FlameFrags vs Wemmbu Simulator
  • Invis Island Eggchan Bid Fight
  • Invis assassin simulator
  • Jadenman Vs Wemmbu Simulator
  • JamatoP VS SpokeIsHere Simulator
  • Lakerek VS Wemmbu Simulator
  • Law End Island Defense Simulator
  • Law HQ fight
  • Law Prison Breakout-v1.4
  • ManePear's training simulator
  • Miniute Vs Null
  • Mist Simulator
  • Null Fight Simulator
  • Ocean rangers simulator
  • Purgatory Finale Fight Simulator-v1.2
  • Purgatory Vs Spokeishere Iron
  • Shoebilly vs wemmbu simulator
  • Spoke VS Leow0ok
  • The Council Simulator v1
  • The Director simulator
  • Theo vs Shoebilly simulator
  • UNSTABLE SMP KITS
  • Underworld simulator
  • Underworld simulator Remastered
  • Unstable Battle on HighWater free version 1.0v
  • Unstable SMP Tournament
  • WemmbuVSFlame
  • kingdom_of_the_caves
  • smuggler path law fight
  • warden vs wemmbu
  • zam invasion simulator
  • Wemmbu vs Arachn1d simulator
  • Hunger Games
  • Wemmbu vs Boosfer Crew Simulator v1
  • Theo vs oroboros V1.0
  • Mugm vs The Horizon Simulator (Pls read README.txt in the map folder)
  • Farex PULL!!!
  • Highwater sim Rework
  • Wemmbu vs Chungies
  • Flame vs Clown
  • FlameFrags vs Toxic players Simulator
  • Wemmbu vs Null Wraiths
  • Wemmbu vs underground civ
  • INVIS BLUE GUY SIMULATOR
  • UnstableSMP VS WispSMP
  • Slushly VS Stormz
  • Slushly VS Nufuli
  • Wemmbu Vs Flowtives
  • Optimized farlands fight
  • Jaden_MAN vs Wemmbu
  • I mastered mace combat simulator
  • WILLOW PVP PRACTICE MAP
  • Nitenly Tortuing Simulator
  • Singleplayer PvP V2.1 Fix
  • Quantum's PvP Practice v1.18
  • Theobald's PVP Practice 1.4
  • Bounty Hunter Fight SImulator v1
  • Heartless Horizon Vikings Fight Simulator v1
  • Mugm vs Naparizel Bliss SMP Fight Simulator v1
  • Dol9hin Assassin Simulator v1
  • Assasin Simulator V1.2
  • The Wraith Simulator
  • Mcpvp sim
  • CanaryCivVsAntaggg
  • oceanwarrrr

bold = goated

if ur bots arent spawning do /vexbot settings advancedspawn true

fixed bot not attacking Vex-1.21.11-6.2

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


Carpet Maps (1.21.x & 1.21.11-x)

Credits to CarpetPVPMaps and CarpetSimulators

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 —
Eggchan vs Wemmbu Simulator only for 1.21.11 Download
Parrot vs Saps Simulator only for 1.21.11 Download
Null prison full only for 1.21.11
Dream Manhunt Simulator Map only for 1.21 Download
Unstable SMP Flamefrags vs Mistrul only for 1.21 Download
Unstable SMP Farlands Fight Simulator 1.0 only for 1.21.11 Download
Flow & Flame vs Shoebilly only for 1.21.11 Download
Unstable SMP Orbital Defense Simulator FREE Version 1.0 only for 1.21.11 Download
Unstable smp: Every LAW fight simulator(version 0.9) only for 1.21.11 Download

❌ 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 some maps to work


👥 Multiplayer

You can use Essential to play with others!

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


Project description from Modrinth.

Mods in Fixed bug

Open any mod on Modpacks.ch to check its files and dependencies.

appleskin-fabric-mc1.21.11-3.0.8.jar SHA-1 441fdbf4e9c34fb61517ceb8e15618950dc4d314 · Modrinth version 59ti1rvg · Project link unavailable Side not labelled
betterhurtcam-1.12.0+mc1.21.11.jar SHA-1 acc66405fbcc7e293ccd39d7db27ac2301b1e8fd · Modrinth version bacofMP2 · Project link unavailable Client only
capet-mace-fix-1.0.jar SHA-1 60b1b6dce9cd0cad44ccd506737f5d0aaae732b6 · Modrinth version 17iEbUlR · Project link unavailable Server only
carpet-crit-attack-fix-1.0.jar SHA-1 f8d4ad606635deca5c1ea8f04ca953744f002961 · Modrinth version S8750ny6 · Project link unavailable Server only
Clumps-fabric-1.21.11-29.0.0.1.jar SHA-1 626fde9e970030cfc8cb64cd0a1abfc03d37ecc2 · Modrinth version OgBE8Rz4 · Project link unavailable Side not labelled
entityculling-fabric-1.9.5-mc1.21.11.jar SHA-1 e2e88c0b2286148e9547eb23d95d2e30e60ad753 · Modrinth version Dx3xsUER · Project link unavailable Client only
fabric-api-0.141.6+1.21.11.jar SHA-1 c98467cbbaf4d197377266795ae015f4130d65b6 · Modrinth version 6qAuTtLR · Project link unavailable Side not labelled
fabric-carpet-1.21.11-1.4.194+v251223.jar SHA-1 7825091272979cd8ed4f88f13408fdbba08f9e8d · Modrinth version HzPcczDK · Project link unavailable Side not labelled
ferritecore-8.2.0-fabric.jar SHA-1 c2e2f5e008f5bc9f401dfad8ca94909917006b65 · Modrinth version Ii0gP3D8 · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.14.2+1.21.11.jar SHA-1 4f17c6b7388f0afc5d24075dc2a294963f78c712 · Modrinth version QwkfUKSj · Project link unavailable Client only
immersive_optimization-fabric-1.21.11-0.1.6.jar SHA-1 fbc5c22dc4a4af912858dbd173a3e31512f9cdc3 · Modrinth version depGdbbb · Project link unavailable Server only
iris-fabric-1.10.8+mc1.21.11.jar SHA-1 acfbe6d065b6c35d85c14da04d35e073363f3acf · Modrinth version ka9PDlsN · Project link unavailable Client only
litematica-fabric-1.21.11-0.26.3.jar SHA-1 321ab263a3638d32f07c07a036f80c5cb2f5d130 · Modrinth version ZF7nARQU · Project link unavailable Client only
lithium-fabric-0.21.4+mc1.21.11.jar SHA-1 203bdcb26e97b3217b045e1182651a7d7b6462ec · Modrinth version Ow7wA0kG · Project link unavailable Side not labelled
malilib-fabric-1.21.11-0.27.8.jar SHA-1 530f47a9f2e4a3a37ad0f6cc1f730b363a3408c3 · Modrinth version APEEwSfs · Project link unavailable Client only
modifyplayerdata-0.3.2-1.21.11.jar SHA-1 0f809838d503ae7325548ee30f0c69da2fa358de · Modrinth version jOZLiGHt · Project link unavailable Server only
modmenu-17.0.1.jar SHA-1 d5612d70bda58e0179b177ca9990e57471e67d19 · Modrinth version cLkYaVuL · Project link unavailable Client only
placeholder-api-2.8.2+1.21.10.jar SHA-1 bbdc920ecff993148cd6e81a208536132245ce40 · Modrinth version qxjzQ9xY · Project link unavailable Side not labelled
sodium-extra-fabric-0.8.3+mc1.21.11.jar SHA-1 e8fd1eae0d589393189f64062ca1e46fc03f4ced · Modrinth version yqY1efrC · Project link unavailable Client only
sodium-fabric-0.8.7+mc1.21.11.jar SHA-1 e8865210ba9a926fc206ab9e73f9d4988a81ff69 · Modrinth version UddlN6L4 · Project link unavailable Client only
ukulib-1.10.2+1.21.11.jar SHA-1 8dfeaf1cacb1dce35c06489d99f193e538a3827f · Modrinth version t9ZJ7RPT · Project link unavailable Client only
ukus-armor-hud-0.10.2+mc1.21.11.jar SHA-1 e11951aab0ff32626feb48045da0574260784543 · Modrinth version ZDZWmIsH · Project link unavailable Client only
vexbot-3.1.15mc1.21.11.jar SHA-1 37ffa0a71cb0a0cdacee25c26d3c89f4a0706a93 · Modrinth version o6H5PvLS · Project link unavailable Server only
wither_death_sound.jar SHA-1 ba1ef673d9405c0b60c506c9a77c989c46818848 · Modrinth version 2VM14Pin · Project link unavailable Side not labelled

Pick your setup

Unstable SMP Simulator by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

2 available setups

Made local changes? Try them in a copied instance before touching a world you care about.

Recent files

Unstable SMP Simulator versions and loaders

36 of 36 releases match

Looking for an older file? The official Modrinth project page is in Resources.