How much RAM does a Plants vs. Zombies server need?

We recommend 5 GB. The pack runs only 20 mods on Fabric 1.21, so its base footprint is small, and most memory goes to loaded chunks and the hostile mobs its combat focus brings. Pregenerate the world and keep bases close and 5 GB stays comfortable. Raise it only if spark shows real memory pressure.

How many players suit this pack?

Around six players is the sweet spot on the recommended 5 GB. The limit has less to do with the mod list and more with how many separate areas are loaded and defended at once. A group sharing one garden fortress can grow past that more easily than six players each holding their own spread-out base.

How do I update the pack safely?

Right now there is nothing to update, because 1.0.0 is the only build Clouser has released. If a new one appears, stop the server, make a backup, then install the newer build from the Modpacks tab. Read its changelog first: a jump to a newer Minecraft version could change world generation and is not something to do mid-run.

Can I add or remove mods?

Yes, through the Files tab or SFTP, as long as every addition targets Fabric for Minecraft 1.21 and brings its own dependencies. Removing one of the 20 core mods can break the theme or leave missing items in existing chests, so test on a copy of the world first. Players need the same client-side changes to connect.

How does it compare to a big adventure pack?

Large adventure packs stack hundreds of mods, dimensions and bosses, and they need far more memory and much longer boot times. Plants vs. Zombies goes the other way: a narrow theme on 20 mods, so it starts quickly, runs on less RAM and is easy to learn. Pick it for a focused themed playthrough, not an endless progression grind.

Do players need the modpack installed to join?

Yes. A themed Fabric pack like this adds blocks, entities and items the client must know about, so every player installs the same 1.0.0 build in a launcher such as the Modrinth App or Prism Launcher before connecting. A vanilla client or a different build will be refused, or disconnect as soon as it meets modded content.

Minecraft modpack · Modrinth

Plants vs. Zombies Server Hosting

by Clouser

FabricMinecraft 1.21Java 21

How install works

One-click install from the Modpacks tab once your server is ready

Recommended RAM: 5 GB
Latest build: v1.0.0Sep 2025
Mod loader: Fabric1.21
Downloads: 219KModrinth

Plants vs. Zombies is Clouser's tribute to the classic garden defense series, rebuilt as a compact Fabric modpack for Minecraft 1.21. Instead of a sprawling kitchen-sink list, it ships 20 mods aimed at one idea: carrying the plants-versus-undead fight into a block world, with adventure, challenge and combat as its core tags.

The hook is the theme itself. Survival stops being a slow climb through tech trees and turns into a question of how well you protect your patch of ground when the zombies arrive. Version 1.0.0, released in September 2025, is the only build so far, so what you install today is the finished vision rather than a moving target that changes every week.

It suits friends who grew up on the original game and want a lighter, focused Minecraft session, creators looking for a theme viewers recognize instantly, and anyone whose hardware or patience gives out on 200-mod packs. Because the list is short, it also works well as the first modded server for a group that has only ever played vanilla.

Hosting Plants vs. Zombies

RAM and what drives load

We recommend 5 GB. With just 20 mods the baseline is low, so memory goes mostly to loaded chunks and to the hostile mobs this combat-tagged pack puts in your path. Every zombie pathfinding toward a base costs server ticks, and a big fight near several bases at once is where lag shows first. If TPS dips during a skirmish, profile with spark to see whether entities or chunk generation are to blame before adding RAM:

/spark profiler start
/spark profiler stop

World pregeneration and chunk loading

Generating fresh 1.21 terrain while players explore is the heaviest job the server does, and it competes with the combat ticks this pack relies on. Pregenerate a radius around spawn before inviting anyone. Chunky is not part of the pack, but it runs on Fabric 1.21 and can be dropped in alongside it:

/chunky radius 2000
/chunky start

Keep defended bases near each other so fewer chunks stay loaded, and zombie fights stay smooth for the whole group.

Java version and updating

Minecraft 1.21 needs Java 21, so the server has to run a Java 21 image. Build 1.0.0 is the only upstream release, which means there is nothing to update today. When Clouser publishes a newer build, take a backup first, then install it from the Modpacks tab and keep your world folder. Never swap a single mod for a version made for a later Minecraft release: the 20 mods are pinned to 1.21 and to each other.

Lightweight

Only 20 mods

A short list keeps boot times quick and leaves headroom on a 5 GB server.

Combat

Zombies are the main threat

Tagged adventure, challenging and combat, the pack asks you to defend rather than just build.

Stable

One finished build

Version 1.0.0 is the complete release, so there is no update churn to manage.

How to install Plants vs. Zombies on your server

1
Order the server
The button on this page preselects the RAM this pack needs. It is online about a minute after checkout.
2
Open the Modpacks tab and search Plants vs. Zombies
Open the Modpacks tab in the panel, search for Plants vs. Zombies, pick the listing by Clouser and choose build 1.0.0.
3
Press install and wait
The panel downloads the server pack, installs the loader and the right Java version, then restarts.
4
Join with the same build
Everyone installs the same pack build in their launcher, then connects to the address on the Overview tab.