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Very Many Players (Fabric) logo

Very Many Players (Fabric)

Mod

by ishlandmc

A Fabric mod designed to improve server performance at high playercounts.

Type

Mod

CurseForge Downloads

3,692,997

CurseForge ID

552542

Modrinth Downloads

17,900,832

Modrinth ID

wnEe9KBa

Last Updated

Nov 7, 2026

Description

Very Many Players

A Fabric mod designed to improve server performance at high playercounts.

VMP is still in early development and things are expected to break. Please report any issues to our issue tracker.

So what is VMP?

Very Many Players, or VMP for short, is a Fabric mod designed to improve general server performance at high playercount without sacrificing vanilla functionality or behavior.
For the best performance it is recommended to use VMP with Lithium.

How VMP achieves its performance improvements?

Server-side game logic performance improvements:

  • Uses area maps to optimize nearby packet sending and player lookups
  • Uses cache to optimize entity trackers, fluid state lookups and ingredient matching
  • Optimizes entity iteration for collisions
  • Optimizes ticket propagator using MCUtil from the Paper project (patch licensed under MIT)

Client-side game logic performance improvements:

  • Makes time source to use built-in Java time source instead of GLFW via JNI calls

Networking performance & responsiveness improvements:

  • Uses our own chunk sending mechanism (optionally with packet-level rate-limiting)
  • Adds packet-level per-player render distance
  • Makes vanilla tcp connections more responsive using packet priority from raknetify
    (works best when the server is connected without reverse proxies such as velocity and ssh port forwarding)

… and more

Support

Our issue tracker: link
Our discord server: link

More information

Check out the README.md here: https://github.com/RelativityMC/VMP-fabric

Compatibility

Mod Loaders

Client Fabric Server

Game Versions

26.1-snapshot 26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

Minecraft Enderman Character Plush

Minecraft Enderman Character Plush

Enderman plush toys, and a reliable gift for a younger player.

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As an Amazon Associate I earn from qualifying purchases.

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Included in Modpacks (621)

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Remboy optimized Remboy optimized BeaconCraft BeaconCraft RAiDxJJ Hypixel Skyblock Modpack RAiDxJJ Hypixel Skyblock Modpack Sackpack Sackpack Sengoku Chronicles Sengoku Chronicles Zomb's PvP Optimization Zomb's PvP Optimization uh optimization uh optimization Strawberry Crew [NeoForge] Strawberry Crew [NeoForge] Perfect Better Vanilla Perfect Better Vanilla Hypixel Skyblock, Optimizations, and Visuals (SOV) Hypixel Skyblock, Optimizations, and Visuals (SOV) Eternity SMP Eternity SMP Ordinary Modpack Ordinary Modpack THE VAULT BRUTAL FACTIONS THE VAULT BRUTAL FACTIONS Full Spectrum Realism Full Spectrum Realism Ziptastic (Server) Ziptastic (Server) Murkrid PvP Optimized Murkrid PvP Optimized Waymarked Waymarked Essentially Optimized Essentially Optimized Uniquely Optimised Uniquely Optimised Sirius Sirius VanillaReborn VanillaReborn CATpack CATpack Aerium Aerium Verbesserung Verbesserung Corroxin's optimizations Corroxin's optimizations RomixerX RomixerX KindredCraft KindredCraft Steve Fans Steve Fans Very Optimised Very Optimised Optimized Utilities Optimized Utilities Sodtesium Sodtesium Smooth Stone Smooth Stone EndlessPixel-Modpack EndlessPixel-Modpack A Crow's Adventure A Crow's Adventure PvP & Performance Mods PvP & Performance Mods [FMCS-L] fps X media X crystal x survival Optimized LITE [FMCS-L] fps X media X crystal x survival Optimized LITE Tech's Optimized MC Tech's Optimized MC pseudofred's Vanilla+ pseudofred's Vanilla+ HM Basic Play HM Basic Play TerraLite TerraLite zy optimised pack zy optimised pack Pix Vulka Optimizations Pix Vulka Optimizations arco's funny modpack arco's funny modpack Aloria Aloria Vulkan Amethyst Vulkan Amethyst medieval smp S4 medieval smp S4 Cobble Lemon Cobble Lemon ThaSMP ThaSMP Gold Not Old Gold Not Old Optimization+++ Optimization+++ Mainchit Mainchit One Click Optimization. One Click Optimization. Eclipse Client Eclipse Client Fabulously Klintomized Fabulously Klintomized Iceberg Summer Iceberg Summer Axo's Optimizations Axo's Optimizations Visual Overhaul Visual Overhaul Outerworlds Outerworlds VtubersPlayCobblemon VtubersPlayCobblemon OptiFabricium OptiFabricium Angels PvP Pack Angels PvP Pack Saphyre MC Saphyre MC Spectacular FPS Spectacular FPS Sorbet Sorbet OptimizedPVP+ OptimizedPVP+ Fundamentally Optimized Fundamentally Optimized CloudyWorlds Modpack CloudyWorlds Modpack Zynirium Zynirium Perfect Optimized Perfect Optimized VortexCraft VortexCraft DDR6 (Best Performance Modpack) DDR6 (Best Performance Modpack) ZenCobblemon ZenCobblemon EverWyn Survival EverWyn Survival Netherite-Client Netherite-Client Potainium Optimized Potainium Optimized Rosedalean SMP Modpack Rosedalean SMP Modpack Fidelity Fidelity Simply Optimized ReForked Simply Optimized ReForked foxward-lite foxward-lite Lucidity+ Lucidity+ More Vulkan More Vulkan VANILLA FPS (VF+) VANILLA FPS (VF+) ClearTick ClearTick Epic Adventure Craft: Super Survival Epic Adventure Craft: Super Survival Ideal Vanilla Ideal Vanilla FLUSTIFY OPTI LITE FLUSTIFY OPTI LITE SJ Boost SJ Boost Anything is Possible Reborn (AIPr) Anything is Possible Reborn (AIPr) Slightly Vanilla Slightly Vanilla Remarkably Plus Remarkably Plus Hayfield's MC+ Hayfield's MC+ MacCraft MacCraft Modded Bridge Modded Bridge [FMCS-H] fps X media X crystal x survival Optimized HIGH [FMCS-H] fps X media X crystal x survival Optimized HIGH Mutzman's Modpack Mutzman's Modpack The Frame Machine The Frame Machine Remboy perfect Remboy perfect Pvp Optimized Pack Pvp Optimized Pack VulkanizedPVP VulkanizedPVP Shivtanium Client Shivtanium Client

External Resources

CurseForge Modrinth Source Code Issues