Immersive Nation: UNDEAD
Immersive Nation: UNDEAD turns Minecraft into a hardcore zombie apocalypse, with a medical system, syringes and a melee weapon for players who survive the infection.
What it does
The mod overhauls zombie survival in the spirit of gritty post-outbreak stories. Infection is handled by a custom cure logic, and version 2.0.0 added a Medical expansion where three syringes stabilize, purge or reset the virus. Players craft these from new survival recipes, and a bite is treated as a serious threat rather than a minor hit.
Installation needs Forge for Minecraft 1.20.1, and the card covers only that version. Client and server are both needed, so the server and every player run the mod. Alex's Mobs is an optional dependency that can be added alongside it. Immersive Nation: UNDEAD is released under All rights reserved and is not open source. The latest Forge file is 2.3.0, published 2026-04-12, and the mod first appeared 2026-01-10.
Key features
Medical syringes
Standard, Advanced and Experimental syringes stabilize the virus, remove it entirely or grant regeneration and resistance buffs.
Infection timer reset
The standard syringe resets the infection timer by one full day, giving players time to find a better cure.
Lucille melee weapon
A barbed-wire wrapped baseball bat with massive knockback and high sweep damage, meant for crowd control against hordes.
Survival crafting recipes
New items and tools are added to the crafting system, so the medical and combat gear can be made by players.
Creative menu tab
Items from the mod are listed in a combat tab in the Creative menu for quick access.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Optional 1
Use cases
Hardcore survival worlds
Players who want a harder zombie apocalypse can use the infection and cure systems to shape a long survival run.
Who it’s for: Players who want a grim survival setting, with infection that must be managed through medicine and weapons that offer crowd control.
How it compares
ZVIAM is a Forge mod for 1.20.1 with client and server environment, released under the GNU Lesser General Public License v3.0 only. SaintsAndSinners is a Forge mod for 1.20.1 with client and server environment under All rights reserved, not open source. THEDEAD is also a Forge mod for 1.20.1 with client and server environment and All rights reserved, not open source. Infectious - Zombie Apocalypse covers 1.19.2 – 1.20.1 on Forge, while this mod targets 1.20.1 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Immersive Nation: UNDEAD | Forge | 1.20.1 | Client and server | 2026-04-12 |
| ZVIAM | Forge | 1.20.1 | Client and server | 2025-09-17 |
| SaintsAndSinners | Forge | 1.20.1 | Client and server | 2024-03-21 |
| THEDEAD (IRONICALLY DEAD!!!!!) | Forge | 1.20.1 | Client and server | 2026-06-20 |
| Infectious - Zombie Apocalypse | Forge | 1.19.2 – 1.20.1 | Client and server | 2026-06-07 |
Questions
Does Immersive Nation: UNDEAD need to be installed on the server?
Which Minecraft version does Immersive Nation: UNDEAD support?
Does Alex's Mobs have to be installed?
In the catalog
Immersive Nation: UNDEAD is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
☣️ IMMERSIVE NATION: UNDEAD (v2.0.0) "The Medical & Combat Overhaul" The World Ended. Now, Survival Begins. Immersive Nation: UNDEAD is a hardcore survival overhaul for Minecraft 1.20.1 inspired by the gritty atmosphere of The Walking Dead. This 2.0.0 Mega Update marks the transition from a simple zombie mod to a…
Official listing
- Modrinth page
- modrinth.com/mod/immersive-nation-undead
- Owner
- ImmersiveNation
- Published
- 2026-01-10
- Updated on Modrinth
- 2026-04-12
- Facts verified
- 2026-10-15