PerformiumModpacks · 1.20 – 26.xThe only performance modpack you'll ever need.
Free528,965 downloads
All of the Minecraft Simulators (Unstable, Bliss, Manhunt etc) you'll ever need with new Sims automatically updated without needing to change the modpack
Direct download from Modrinth · 141,945 downloads
Unstable SMP Simulator is a modpack made by Hi_Its_I. All of the Minecraft Simulators (Unstable, Bliss, Manhunt etc) you'll ever need with new Sims automatically updated without needing to change the modpack.
It supports Minecraft 1.21. It has been downloaded 141,945 times on Modrinth. The last update came out on Nov 10, 2026.
Unstable SMP Simulator has had 34 releases on Modrinth since Apr 11, 2026. 34 of them came out in the past year. The newest is 1.21.11-6.0, released on Oct 21, 2026. It is made for Minecraft 1.21.11. It runs on Fabric. The download is 372 KB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
1.21.11-6.0 | Oct 21, 2026 | 1.21.11 | Release |
1.21-5.0 | Oct 21, 2026 | 1.21 | Release |
1.21.11-5.0 | Oct 19, 2026 | 1.21.11 | Release |
Vex-1.21.11-7.4.1 | Oct 10, 2026 | 1.21.11 | Release |
Vex-1.21.11-7.4 | Oct 10, 2026 | 1.21.11 | Release |
There is a version difference
Modpack Latest Update (YYYY-MM-DD)
Vexbot: 2026-11-05
Carpet: 2026-10-21
Image from Wemmbu
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 · Simulator Type
1.21.11-x · Carpet-based simulators
Vex-1.21.11-x · Vexbot-based simulators
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 ~ )
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
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
❌ 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
You can use Essential to play with others!
⚠️ Your friends need to have the same modpack installed too.
Written by Hi_Its_I. Read it with pictures on Modrinth.
This modpack runs on Fabric for Minecraft 1.21. The launcher you install it with sets that up for you.
Download the .mrpack file from Modrinth.
Open it with a launcher that reads .mrpack files, such as the Modrinth App or Prism Launcher: it makes a new instance with every mod and setting of the pack.
Give the instance enough memory: most modpacks want 4 to 8 GB.
To play it with friends on a server, use the server files of the modpack if its page offers them; otherwise install the same mods on the server.
Full guide: How to install Minecraft mods
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| Unstable SMP Simulatorthe one you looked at | 142K | 1.21 | 1 day ago | Free |
| Performiummaybeizen | 529K | 1.20 – 26.x | 18 days ago | Free |
 The Pixelmon ModpackPixelmon | 2.4M | 1.16 – 1.21 | 20 days ago | Free |
 SkyBlock EnhancedKd_Gaming1 | 2M | 1.21 – 26.x | 2 days ago | Free |
Not yet. The newest version it supports is Minecraft 1.21.
Yes. Unstable SMP Simulator is free to download from Modrinth.
Yes. The last update came out in the past day.
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