How much RAM does a Cursed Walking server need?

8 GB for a group of around six. The pack runs hot because hostile mobs spawn during the day as well as at night, so the server is always ticking a zombie population near every player instead of only after dark. Add the generated cities and structures full of loot containers and the baseline sits high, which is why we do not start this one lower.

Why does the server lag badly every so often?

Check the in-game day. The pack sends a horde at your group roughly every ten days, and a large mass of pathfinding zombies converging on defended bases is by far the heaviest thing the server does. That is expected behavior rather than a fault. A permanent slowdown is a different problem, usually ungenerated chunks or a very high view distance.

Should I enable city generation in the config?

No. Cities are already enabled by default in current versions, and the author specifically discourages turning them on manually because it can cause chunk generation errors. If you followed an older guide that told you to change that setting, put it back before your group builds anything. Getting this wrong early is much cheaper to fix than discovering it later.

Do I need to pregenerate the world?

It helps a lot. Cities, bunkers and laboratories are far more expensive to generate than plain terrain, so several players pushing into new areas at once causes noticeable hitching. The pack includes no pregeneration mod, so add Chunky to the server, cover a reasonable radius around spawn while nobody is online, and let it finish before you invite the group.

Which build should I install?

Version 3.3, the current one, which is also the build that has server files published for it. Some earlier releases, including the 3.2 public beta, never had matching server files, so pinning to one of those leaves you without a supported server install. Whichever build you choose, every player needs the same one because Forge compares the mod list on connect.

It is the pack's endgame dimension, reached by finding a map that leads you to a drill room and dropping through the hole in the bedrock there. It holds its own biomes, structures and custom creatures, including two designed specifically for it. From a hosting point of view it is a second dimension that generates when your group reaches it, rather than something present from day one.

Minecraft modpack · CurseForge

Cursed Walking Server Hosting

by OnMod

ForgeMinecraft 1.20.1Java 17

How install works

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

Recommended RAM: 8 GB
Latest build: v3.3Aug 2026
Mod loader: Forge1.20.1
Downloads: 8.5MCurseForge

Cursed Walking is a zombie apocalypse pack that refuses to give you a quiet moment. Zombies spawn in daylight as well as at night, they climb on top of each other to get over your walls, they group into hordes, and they can infect you. There is no safe half of the day to go gathering in.

The pressure is also on a timer. The pack works in phases: as the days pass, tougher variants start appearing, runners and brutes among them, and every ten days the hordes come for you directly. That turns a Cursed Walking server into a cycle of fortifying, surviving an assault, and repairing before the next one.

To fight back you get a genuine arsenal, with firearms from Timeless and Classic plus addons and melee weapons and armor from Marbled's mods, all folded into the pack's own loot tables. Cities, bunkers, laboratories and ruins are scattered across the map to raid for it. An endgame dimension called the Depths waits underneath for groups that get that far. It runs on Forge 1.20.1 and suits groups who want defense to be the main event.

Hosting Cursed Walking

8 GB, and constant mob pressure

We set 8 GB for a group of around six. The reason this pack sits at the top of the band is that hostile mobs never stop: daylight does not clear them, so the server is ticking a hostile population around every player all the time rather than only after dusk. That is a steady cost, not a spike, and it is the main thing your memory is paying for.

Plan for the ten-day horde

Unlike packs where load is driven by whoever happens to be exploring, Cursed Walking has a predictable server-wide spike. Every ten days the horde comes, and a large group of pathfinding, climbing zombies converging on defended bases is the heaviest moment the server will see. If people report the server struggling, ask which day it is before changing anything, because a horde night is not the same problem as a permanent slowdown.

Do not turn city generation on by hand

The pack's own guidance is clear on this. Cities are enabled by default in current versions, and manually enabling them is discouraged because it can cause chunk generation errors. If you have followed an older guide that told you to switch them on, undo it. This is worth checking before your group has built anything on the world.

Pregen, the Depths, and updating

City and structure generation is expensive here, so pregenerating around spawn before you invite people is worthwhile. The pack ships no pregeneration tool, so add Chunky to the server and let it run while nobody is online. Note the Depths is a separate dimension reached late in the pack, and it generates when your group gets there rather than up front.

Forge 1.20.1 means Java 17, chosen at install. Server files exist for the current build but not for every older release, so stay on a version that has them. Back up before updating.

Load

Daylight is not a break

Zombies spawn day and night, so the server ticks a hostile population around players constantly.

Hordes

A spike every ten days

The scheduled horde assault is the server's heaviest moment, and it is predictable rather than random.

Worldgen

Leave cities on default

The author warns that manually enabling city generation can cause chunk generation errors.

How to install Cursed Walking 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 Cursed Walking
In the panel's Modpacks tab, search for Cursed Walking and pick Cursed Walking - A Modern Zombie Apocalypse by OnMod, then choose build v3.3, which is the one with server files.
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.

Available builds

Build	Minecraft	Loader	Released	Installable
v3.3	1.20.1	Forge	Aug 8, 2026	Installable
v3.3	1.20.1	Forge	Aug 7, 2026
v3.2.5	1.20.1	Forge	Jul 12, 2026	Installable
v3.2.4	1.20.1	Forge	Jun 26, 2026	Installable
v3.2.4	1.20.1	Forge	Jun 26, 2026