
Moscovium
Multiplayer Zombies modpack heavily based on creating different settlement groups, battles, and skirmishes between players while striving to survive in a zombie-infested world. (This can be played single player if you wish to do so!)
About this Modpack

What is Moscovium?
- Moscovium (symbol: Mc, atomic number: 115) is a synthetic chemical element in the periodic table. It is found in the Call of Duty Zombies franchise – Used by scientists to create zombies, alter time and space, and create alternate dimensions.
A MZS* Modpack
Moscovium is a Multiplayer modpack intended to be played by a single group or multiple groups. You can strive in a zombie-infested world alone, with friends, or in a large group, competing against each other to see who can survive the longest.
*MZS - Multiplayer Zombies Survival
⚠️ macOS: Reduce Resolution on macOS is enabled. If your game is 1/4 the size of the window, just resize the window a little bit to fix!
Features
- Upon spawning
- Disabled Nether and End dimensions to limit players to only survive the overworld.
- Zombie Variants through texture, attributes, and items.
- Zombies spawn frequently, persist, and do not burn in the sun.
- Zombies drop some unobtainable items, such as enderpearls, netherwart, and blaze rods.
- Disabled spawning of villagers, forcing you to rely on pure survival tactics rather than cheesing.
- Curing Zombie Villagers will not revive them; instead, make them disappear.
- TacZ Guns Mod and addons – prepare for battles against other player groups or against large zombie waves that may approach your base.
- New Biomes and Structures across the world, barren and overtaken by zombies – choose a good spot to develop a fortress!
- Open Parties and Claims – create claims around your fortress and invite your teammates to survive alongside you!
How to Play
Upon creation of a Multiplayer instance or Singleplayer world, these rules should be followed for a full experience:
- You may not make an underground base or have a basement lower than 20 blocks below the ground level on which your fortress is.
- Players should not be allowed to fight each other for the first few days or 2 weeks to allow groups to establish forts and materials.
- Make sure to have fun spending time with your friends <3
Server Operator Notes
Modpack Modification
When playing using a dedicated server from or any other hosting service alike, please make sure to remove client-sided mods such as sodium, iris, entity culling, etc.
server.properties
allow-nether=true
# Disables the Nether (Mod handles disabling portals and End)
difficulty=hard
# Maximizes difficulty of the modpack (Optionally enable Hardcore if wanted)
enforce-secure-profile=false
# Disables Chat Reports within the server (Modpack comes with NoChatReports)
pvp=false
# Disable PVP for the first few days, optionally.
Setting up for Players
From the console, please set this to allow for the best experience:
/gamerule spawnradius 200
# Players will spawn within a 200 block radius of the spawn point (Optionally increase to your liking)
Hosting
To play with friends, you can use 2 of these recommended hosting methods or choose your own!
E4MC
You can host the world directly from your computer for friends to join! However, due to the modpack’s high requirements, your computer may struggle. (Note: Simple Voicechat is not compatible with E4MC.)
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Pebblehost
Available Versions
How to Set Up a Moscovium Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Moscovium). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Moscovium" and click "Install". The fabric loader and Minecraft 1.21.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Moscovium server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Moscovium server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).
Can I add custom mods to Moscovium without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Moscovium server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
Similar Modpacks
Rent Moscovium Server
Start your own server with automatic modpack installation.
Supported Versions
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From €8.00/month with 6 GB RAM for the best performance.
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