Running a Hytale server in Early Access: what is different from Minecraft

Hytale reached Early Access on 13 January 2026 and has been shipping updates on a weekly cadence since. If you have run a Minecraft server for years, most of your instincts transfer. A few of them will actively mislead you.

This is what is genuinely different, written for someone deciding whether to run one. I should say up front that I have not yet hosted a Hytale server for a customer, so what follows is drawn from the official server manual and from what the differences mean operationally, not from a year of running them in production. Where I am reasoning rather than reporting, I have said so.

The transport is UDP, and it changes your options

Minecraft speaks TCP. Hytale speaks QUIC over UDP, on port 5520 by default.

For self-hosting, that means every firewall and port-forward rule has to be written for UDP. A rule copied from a Minecraft setup will be syntactically fine and functionally useless. QUIC handles NAT traversal well enough that most connections work without further configuration, which is a genuine improvement, but the protocol line in your firewall is not optional.

The larger consequence is about protection. The reverse-proxy services that filter DDoS traffic for Minecraft servers are TCP proxies. They cannot carry QUIC. This is not a gap any particular host can close with effort, it is a property of the transport, and if a provider advertises the usual proxy-based filtering on a Hytale plan, that claim does not survive contact with how the game actually communicates. Ask what specifically is filtering UDP.

Java 25, specifically

The manual requires Java 25 and points at Adoptium's Temurin builds. Not "Java 21 or later", not whatever your distribution ships. Check with java --version before you spend an evening debugging a server that will not start.

Both x64 and arm64 are supported, which is more flexibility than Minecraft server operators are used to.

Weekly updates are the real operational difference

This is the part that changes how you run the thing.

A Minecraft server can sit on the same version for a year. Hytale in Early Access ships weekly, which means the platform underneath your world moves whether or not you are ready. That has three practical effects.

Your snapshot discipline has to be better than it was. In Minecraft, a snapshot before a version upgrade is a sensible habit. In Hytale right now it is the difference between a bad afternoon and a lost world, because build-to-build world format changes are a real possibility on a game this young. Take one before every update, not just the ones that look risky.

Rolling back is not symmetrical. Once a newer build has opened and written to your world directory, going back to the previous build is not guaranteed to work. Treat a patchline switch or a major update as one-way unless you are holding a copy you took first.

Your players have to move with you. A client on one patchline cannot join a server on another. If you switch, everyone switches, and they need telling with a date and a time rather than discovering it when they cannot connect.

If you are moving to Hytale from Minecraft, the single habit worth importing is the one thing Minecraft server operators tend to be casual about: pull a copy of the world off the server, onto your own machine, on a schedule. Platform snapshots protect you against a bad build. A copy in your own hands protects you against everything else.

Configuration is JSON, and it is read at startup

Hytale uses config.json, with permissions.json, bans.json and whitelist.json alongside it. World-specific settings live under universe/worlds/.

One trap the manual calls out explicitly: those files are read when the server starts and written to when in-game actions occur. Editing them by hand while the server is running risks your changes being overwritten by the running process. Stop the server, edit, start. This is a different reflex from server.properties, which people routinely edit live and reload.

Sizing

The manual sets a 4GB minimum and, more usefully, says outright that "resource usage heavily depends on player behavior" and tells you to monitor real consumption. View distance is the dominant factor, and it recommends capping at 12 chunks, which is 384 blocks.

Worth knowing: memory pressure in Hytale shows up as CPU load, because garbage collection runs harder when memory is tight. An under-provisioned server is not just at risk of crashing, it is slow first. That makes starting a little generous more sensible than it would be in Minecraft, where the failure mode is cleaner.

There is a longer piece on how much RAM a server actually needs if you want the reasoning rather than the number.

The honest case for waiting

I sell Hytale hosting, so read this with that in mind.

If you have a settled Minecraft community that is happy, there is no operational reason to move it. Early Access means the ground moves weekly, world formats can change, and mods that work today may not work after Thursday. That is exciting if you want to be early and irritating if you want stability, and knowing which of those you want is the entire decision.

The case for running one now is that being early is genuinely valuable when a game is building its server ecosystem. The case for waiting is that everything gets easier once the update cadence settles.

What I would not do is migrate an existing community wholesale on the assumption it will behave like a Minecraft server. Run one alongside, learn what breaks, and move when you know.

What this host does and does not claim for Hytale

• Java 25, UDP 5520, no port blocking in either direction. A UDP game server works without asking anyone to open anything.
• A world snapshot before every patchline change, plus the standard retention: 24 hourly, 7 daily, 4 weekly, 12 monthly, 1 yearly, on-site and encrypted off-site.
• A rollback you run yourself from the panel, without a ticket.
• No DDoS filtering at the application layer, for the transport reason above. You get whatever the carrier filters upstream and nothing more. If that matters to your server, it is better to know before you order.
• No uptime SLA on an Early Access game whose builds I do not control.

Sources: the official Hytale server manual and Hytale's news posts.