What Very Many Players (Fabric) works with.
| Platform | Java Edition |
|---|---|
| Loaders | Fabric |
| Minecraft versions | 1.18, 1.18.2, 1.19.4, 1.20.6, 1.21.11, 26.1.2, 26.2, 26.3 |
| Environment | Client, Server |
Very Many Players (VMP) is a Fabric mod built to improve general server performance at high player counts without sacrificing vanilla functionality or behavior. It runs on Minecraft 1.18 to 26.3, is required on the server and optional on the client, and its entire focus is throughput, not new gameplay.
Loaders and versions
- Fabric: Minecraft 1.18 to 26.3. The newest build needs no dependencies.
What it optimizes
- Area maps speed up nearby packet sending and player lookups instead of scanning every entity
- Caches cut repeated work for entity trackers, fluid state lookups and ingredient matching
- Entity iteration for collisions runs faster with fewer redundant checks
- The ticket propagator is ported from Paper's MCUtil, a patch licensed under MIT
- A custom chunk-sending path adds optional packet-level rate limiting and per-player render distance
- The client swaps GLFW's time source for Java's built-in one to cut JNI call overhead
Installation
Install Fabric loader first using the install Fabric guide, then drop the matching VMP jar into the mods folder as described in the general mod install guide. The newest build needs no separate dependency jar, which keeps setup to a single file on the server.
Questions about Very Many Players (Fabric).
5 questions
What does Very Many Players actually do
It rewrites several hot paths in server-side game logic, including packet sending, entity tracking, collision iteration and chunk sending, so a server handles more concurrent players, without changing vanilla mechanics or block behavior.
Do players need the mod installed on their client
No. VMP is required on the server to take effect, and the client side is optional; players can join a VMP-equipped server without installing anything themselves.
Should I run Very Many Players with Lithium
Running Very Many Players alongside Lithium is recommended, since the two mods target different bottlenecks and combine for stronger overall server performance.
Which Minecraft versions does Very Many Players support on Fabric
Fabric builds cover Minecraft 1.18 through 26.3, with the newest build requiring no separate dependency jar.
Does Very Many Players work through a proxy like Velocity
It still functions, but its networking and responsiveness gains are strongest on a direct connection. Reverse proxies and SSH port forwarding reduce the benefit of its packet-priority handling.
