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Zombie Invade 100 Days

Forge modpack for Minecraft 1.20.1 by FlameFire

Get it on Modrinth Full mod list (128)

Zombie Invade 100 Days runs on Minecraft 1.20.1 with Forge. It has 126 mods, needs about 8 GB of RAM (our estimate) and runs on both client and server. The latest version is 2.3-Fix, released Dec 13, 2025.

Minecraft version
1.20.1
Mod loader
Forge
Mods
126
RAM to allocate
8 GB (estimate)
Runs on
Client and server
Latest version
2.3-Fix ()
Downloads
15M (#2)
First released
Pack file size
28.6 MB
License
All Rights Reserved

What is Zombie Invade 100 Days?

Zombie Invade 100 Days is a Forge modpack for Minecraft 1.20.1, published by FlameFire on Modrinth since 2024.

The latest release, 2.3-Fix from Dec 13, 2025, declares 126 mods plus 2 other projects such as resource packs or shaders. Across 7 published versions it has covered Minecraft 1.19.2 through 1.20.1.

With 15M downloads it ranks #2 of the 518 most-downloaded Modrinth modpacks we track, and its authors tag it as challenging and combat.

Our notes on Zombie Invade 100 Days

What sets it apart

This Forge pack is a remake of the older Zombie Apocalypse “100 days” style of pack, rebuilt on newer Minecraft versions. The author’s stated aim is to restore the original as closely as current mods allow.

The project page lists what was carried over and which mod does each job: Hardcore Revival for reviving downed players, EnhancedVisuals for injury screen effects, Physics Mod for gore, Spartan Weaponry and Spartan Shields for melee gear, Dynamic Trees, and Ore Excavation for vein mining. The MC Baike entry also lists Epic Fight, Guard Villagers, The Lost Cities and Zombie Awareness and counts 104 mods, though that list shows 1.19.2-era versions.

Version 2.0 moved to Minecraft 1.20.1 and swapped the gun mod to TaCZ. Version 2.2 replaced the core zombie mod with End of Days and added a nine-stage zombie evolution system, with a new stage every 10 days from day 10 to day 90.

Who it suits

It suits players who want a base-defense survival challenge with a clear time goal. The page suggests fortifying a village in a superflat world; normal worlds also work.

The Modrinth page is bilingual and names a Chinese community as the only one.

Before you install

Two version lines exist: 1.x on Minecraft 1.19.2 and 2.x on 1.20.1. They use different core mods, so guides for one may not match the other.

The authors document one world generation quirk. In 2.x, Lost Cities generate in the Overworld by default, but a standard superflat world will not produce them unless you use the preset described on the page. Turning cities off means editing the Lost Cities profile settings.

The 2.3 Fix release repairs the in-game guide book failing to open. No memory or hardware requirements are published.

Modrinth lists no wiki, source repository or Discord, and its issue link goes to the MC Baike entry.

Playing with friends

The pack is not client-only. Modrinth marks it as required on both client and server.

The author publishes server packs starting with version 1.2, attached to most releases on Modrinth. The page describes the setup: on Windows, run the included start script twice, once to install and once to launch. On other systems, run the Forge installer and then the start script. The changelog notes the server pack stayed at 2.3 when the 2.3 Fix client release came out.

Written from public sources, not from hands-on testing. Sources: Modrinth project page, Modrinth changelog, MC Baike (mcmod.cn) pack entry. See our editorial policy.

Most widely used mods in Zombie Invade 100 Days

The latest version declares 128 projects, 126 of them mods. The ones below appear in the most packs we track.

  • 71 run on client and server
  • 47 client only
  • 8 server only

Full Zombie Invade 100 Days mod list

17 more files are bundled inside the pack without a Modrinth project, so we cannot name them.

How its mod list compares

Less common picks: 8 mods found in five or fewer tracked packs.

Packs with the most mods in common

What kinds of mods are in Zombie Invade 100 Days?

Of its 126 mods, 66 are tagged utility, 33 library and 18 decoration. Mods can carry several tags, so the counts overlap.

  • utility: 66 (52%)
  • library: 33 (26%)
  • decoration: 18 (14%)
  • adventure: 17 (13%)
  • optimization: 14 (11%)
  • game mechanics: 13 (10%)

How big is Zombie Invade 100 Days?

With 126 mods, Zombie Invade 100 Days has more mods than 80% of the 491 packs we track and more mods than 64% of the 147 on Minecraft 1.20.1.

The pack file is 28.6 MB. 47 mods are client-only and 78 also run on a server. Alongside the mods it declares 2 resource packs.

How actively is Zombie Invade 100 Days updated?

Zombie Invade 100 Days was first published on Apr 11, 2024, and has 7 published versions in total.

The latest release, 2.3-Fix, is dated Dec 13, 2025, 333 days before our data was fetched on Nov 11, 2026. Releases have covered 2 Minecraft versions over 1.7 years.

Staple mods Zombie Invade 100 Days includes and leaves out

Across the 185 Forge packs we track, 15 mods turn up most often. Zombie Invade 100 Days includes 14 of them; it leaves out Entity Culling.

How much RAM does Zombie Invade 100 Days need?

Zombie Invade 100 Days needs 8 GB allocated (6 GB minimum). Our estimate from the 126-mod list, not measured.

How to set allocated memory

How to install Zombie Invade 100 Days

Search for "Zombie Invade 100 Days" in the Modrinth source of your launcher. Pick version 2.3-Fix for Minecraft 1.20.1 (Forge). Modpack install guide.

How do I make a Zombie Invade 100 Days server?

Zombie Invade 100 Days is marked as needing a server-side install, so the server must run the same mods and version as the players.

  • Match the version: the latest pack version is 2.3-Fix for Minecraft 1.20.1.
  • Loader: Forge.
  • Memory: at least 6 GB (our estimate).

Modpack server guide.

Versions

Newest build for each of 2 Minecraft version and loader pairs.

MinecraftLoaderPack versionReleased
1.20.1Forge2.3-Fix
1.19.2Forge1.2