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Project Zomboid Server – Dedicated, Ports 16261, RAM, Mods

Project Zomboid dedicated server: SteamCMD, UDP 16261/16262, RAM, coop vs dedicated, Workshop mods and troubleshooting.

Game servers

Rent Zomboid server

Quick answer: A Project Zomboid dedicated server runs 24/7 via SteamCMD, needs UDP 16261 + 16262 and RAM by player count – not slot plans.

PortProtoUse
16261UDPGame
16262UDPSteam query

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Frequently asked questions (FAQ)

Which port for Project Zomboid dedicated?
Default: UDP 16261 (game) and UDP 16262 (Steam). Open both in UFW and the provider firewall.
Co-op host or dedicated?
Co-op dies when the host goes offline. Dedicated runs 24/7 via SteamCMD app 380870 and needs more RAM.
How much RAM?
2–4 players: 4 GB. 8–16: 8 GB. Heavy mods/maps: 12 GB+.
Mods on dedicated?
Workshop IDs in server INI / mods.txt. Clients need the same mods. Restart after Workshop updates.
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