🧟 UndeadPandemic

Zombie apocalypse survival plugin for Paper, Spigot & Purpur

Transform your Minecraft world into a full-blown post-apocalyptic survival experience.

Fight the infection. Purify your water. Survive the Blood Moon.

Paper • Spigot • Purpur  |  Built for 1.21  |  Latest: 3.3.1

☣️ Unleash the Apocalypse

UndeadPandemic is a zombie apocalypse survival plugin for Minecraft 1.21 servers running Paper, Spigot or Purpur. It adds a spreading infection, contaminated water and food, thirst and dehydration, infected livestock, zombie players, intelligent zombies and escalating hordes, so every decision matters. Water, food and the infected are all vectors for the plague. Adapt fast, scavenge smarter, and stay one step ahead of the infection… or become part of it.

This isn't just survival. It's survival reimagined.

The free plugin is a complete apocalypse overhaul. An optional Premium edition adds deeper server-owner control and exclusive challenge content for a one-off payment (see Free vs Premium).

💥 Features at a glance

• 🧪 Zombie infection system: configurable symptoms, duration, mutation and spread
• 🧟 Custom and vanilla zombie spawning: plus Premium behaviour control, spitting zombies, the Hungrie and headshot-only kills
• ⚰️ Death zombies and zombie players: die and your zombie carries your inventory; die infected (Premium) and you come back as one
• 🌕 Blood Moon and Horde events (Premium): escalating threats that punish noise, lingering and long survival streaks
• 💧 Thirst and dehydration: drink safely or pay the price
• 🚰 Contaminated water, tainted crops and infected animals: boil dirty water over a campfire or go thirsty
• 🩹 First aid items: Adrenaline, Analgesia, Antibiotics, Bandages and First Aid Kits
• ⛺ Camps (Premium for now): protected camps with upkeep and flags
• 🔌 Integrations: Vault, WorldGuard, WorldEdit and PlaceholderAPI
• 🌍 Resource pack and 7 languages included free

🧪 Zombie infection system

The infection is the heart of UndeadPandemic. Players can catch it from zombies, from contaminated water and from tainted food, and once it takes hold it gets worse over time unless it is treated. Server owners control how the plague behaves: how quickly symptoms appear, how long the infection lasts, how severe mutations become, and how easily it spreads.

🧟 Zombies, death and hordes

Free: choose between custom UndeadPandemic zombie spawning and vanilla spawning, so you can overhaul the undead or keep Minecraft's own. When a player dies, a zombie named after them spawns where they fell and carries their inventory until it is killed.

Premium gives you far more control over how zombies behave and fight:

• Zombie behaviour config: toggle sunburn, daylight spawning, door-breaking, name tags and item pickup
• Spitting zombies: an attribute that gives zombies a ranged attack
• Headshot-only kills: require precision to put the infected down
• The Hungrie: an intelligent zombie that sleeps until it hears enough noise, remembers where it last saw you and alerts others nearby
• Zombie players: an infected player who dies comes back as a zombie for a second life, until cured. A second death is final
• Enhanced horde types: tougher variants used in horde events

Horde Event

Stay too loud, stay too long or survive too many nights and the horde comes for you. Escalating waves target a player directly, triggered by any of:

• Noise: being too loud
• Presence: staying in one place too long
• Nights survived: consecutive nights survived

Thresholds, wave sizes and cooldowns are all configurable, so you can tune the event from a gentle scare to a genuine siege.

Blood Moon

Every full moon there's a chance the power of the moon produces a horde, and once the hordes start they don't stop until the full moon disappears. Make sure you have a productive farm and strong walls.

💧 Thirst, water and food

Thirst and dehydration are a constant pressure alongside hunger. Dehydration weakens players until survival slips away. You control how fast dehydration sets in and which fluids actually satisfy thirst. Premium adds custom thirst rates and buffers for finer tuning.

Contaminated resources keep players on their toes:

• Water system (free): water from rivers, lakes and ponds has a chance of being dirty. Pour it into a cauldron over a lit campfire and boil it, watching the floating timer. Fuel the campfire, and take back any fuel left when the fire goes out
• Tainted crops: food can be a vector for the plague
• Infected animals: livestock can carry and spread the infection, and even your animals may turn against you
• Animal scarcity (Premium): configure how rare animals are, making food harder to come by
• Rainwater-filled cauldrons (Premium): collect rainwater as a safer source of water

🩹 Health, injuries and first aid

Free: craft and use first aid items to fight back against the infection and its effects:

• Adrenaline: gives you an adrenaline rush that allows you to push through the pain!
• Analgesia: kills the pain, but doesn't remove the source of pain.
• Antibiotics: heals bacterial infections. It doesn't work on the source of the Zombie illness.
• Bandages: stops the bleeding.
• First Aid Kit: contains important health items!

Premium adds the injury and illness system: real consequences such as bleeding, a broken-leg slowdown and environmental illness like cold.

Permission nodes let you decide who can use medical items (undeadpandemic.use.medical).

⛺ Camps (Premium for now)

Survive together, or fall alone. Place a Camp Campfire to claim a protected area, keep it fuelled to pay its upkeep, add friends as members and set flags for PvP, building, chest access and more. Camps need WorldGuard.

Camps are Premium for now. This is temporary: they are due to return to the free version with 1 camp per player, while Premium keeps unlimited camps and flag control.

🎭 Survival items

• Barbed Wire: wire with spikes. Useful to keep people, and zombies, out of your base.
• Wire Cutters (Premium): cut through barbed wire. How useful!
• Torch: no civilisation. No one to keep the lights on. Battery operated torches will help enlighten your adventures.
• Batteries: for the torch. Quite important.
• Zombie Guts (Premium): smear yourself in zombie remains to hide from the horde, until rain washes it away.
• Zombie Mask (Premium): a disguise item.

🏆 Rewards and integrations

UndeadPandemic hooks into your existing economy and stats setup (see Compatibility).

PlaceholderAPI expansion: show player data on scoreboards, tab lists and holograms. Included placeholders:

• Zombies killed: %undeadpandemic_zombies_killed%
• Zombies killed by headshot: %undeadpandemic_zombie_headshots%
• Thirst: %undeadpandemic_thirst%

💎 Free vs Premium

The free plugin is a complete apocalypse overhaul. Premium adds deeper server-owner control and exclusive challenge content: one payment, lifetime access.

Buy Premium ➜

💎 Premium unlocks with a one-time licence. Enter your API key and UUID in config.yml. No subscription.

⌨️ Commands and permissions

Aliases: /undeadpandemic, /undead, /up

The full list, including per-flag camp permissions, is in the docs.

⚙️ Configuration, resource pack and languages

• Configuration: edit config.yml for the core settings, and the files in the config/ folder for everything else: camps.yml, zombies.yml, items.yml, thirst.yml, water.yml, health.yml, mobs.yml and events.yml. Use /up reload to apply changes without restarting.
• Resource pack: custom textures for every UndeadPandemic item, available free from undeadpandemic.net. Works with Minecraft 1.21 and above.
• Languages: 7 supported languages: Dutch, English, French, German, Portuguese, Spanish and Chinese (Mandarin).
• Update notifications: admins with undeadpandemic.updates are told when a new version is available.

📷 Gallery

Drink at your own risk…

Hope you brought a sword.

You're one of them… for now.

📥 Installation and requirements

1. Download the .jar from the Versions tab.
2. Drop it into your server's /plugins folder.
3. Restart the server and edit config.yml to taste.
4. Full setup guide: docs.undeadpandemic.net

Requirements

• Server software: Paper, Spigot or Purpur
• Minecraft version: 1.21
• Java version: 21
• Required plugins: None
• Optional plugins: Vault, WorldGuard (needed for camps), WorldEdit and PlaceholderAPI

🔌 Compatibility & Integrations

Minecraft: Built for 1.21  |  Servers: Paper, Spigot, Purpur

Works seamlessly alongside:

• ✅ Vault — economy hooks
• ✅ WorldGuard — region protection and camps
• ✅ WorldEdit — world tooling
• ✅ PlaceholderAPI — live player data (zombies killed, headshot kills, thirst)

💬 Join the Community

Need help, or want to show off your infected survival base?

👉 Join the UndeadPandemic Discord

Documentation: docs.undeadpandemic.net · Issues: GitHub

📜 License

Closed-source. Subject to the terms included with your download.