You can run a Hytale dedicated server in Docker with a maintained community image, a persistent /data volume, Java 25-compatible server files, and one published UDP port. The practical sequence is: obtain the official Assets.zip and Server payload, start the container with at least 4 GB of memory, complete the OAuth device login shown in the logs, and forward UDP 5520 to the host. Hytale uses QUIC over UDP rather than TCP, so a TCP-only port mapping will not let players connect.
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This guide uses ghcr.io/ginco-org/hytale-server:latest as an example. It is an unofficial image, so inspect its Dockerfile, release history, tag policy, and license before putting a public or production server on it. Hypixel Studios’ Hytale Server Manual, updated October 12, 2026, remains the authority for server behavior, authentication, files, and command-line options.
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A Docker container does not replace Hytale’s server distribution or its account requirements. Prepare these items first:
- A Docker Engine installation with the Compose plugin (the command used below is
docker compose). - A host with Java 25 support for the Hytale server payload and at least 4 GB of available memory. Real requirements increase with concurrent players, loaded entities, view distance, mods, and large content packs.
- The official game-server payload:
Assets.zipplus theServer/directory, includingHytaleServer.jarand its runtime files. - A directory on the host that will be mounted to the container’s
/datapath. This directory must be persistent and backed up. - An account that can complete Hytale’s device authorization in a browser. Players cannot join until the server is authenticated.
For internet hosting, you also need control of the host firewall and, if the host is behind a router, permission to create a UDP port-forward. A private LAN server can omit the router step but still needs the Docker mapping and any host-firewall rule.
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Choose and verify the Docker image
The example image is maintained outside Hypixel Studios. Treat it as an integration layer around the official files, not as an official Hytale distribution. Before deploying it, review the repository README, image tags, Dockerfile, update history, and license. Pin a tested tag instead of relying on latest when reproducibility matters; the example below keeps latest because it mirrors the image’s documented Compose pattern.
Check that the image supports the features you intend to use: downloader or manual file provisioning, OAuth prompts, backups, mod downloads, health checks, a console pipe, and update handling. Feature names and environment variables are image-specific. Hytale’s own manual should take precedence if an image README conflicts with documented server behavior.
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Create the Compose project
Make a directory for the deployment, then create compose.yaml with this minimal service:
services:
hytale:
image: ghcr.io/ginco-org/hytale-server:latest
container_name: hytale-server
restart: unless-stopped
ports:
- "5520:5520/udp"
environment:
EULA: "true"
MEMORY: "4G"
volumes:
- ./data:/dataThe 5520:5520/udp declaration is deliberate. Hytale’s default listener is UDP, not TCP, because the game uses QUIC. Do not change the protocol suffix to /tcp and expect connections to work. The MEMORY value is a starting ceiling, not a performance guarantee; raise it only when the host has matching headroom and monitoring shows the server needs it.
Create the data directory before the first launch:
mkdir -p data
docker compose up -dFollow the first-start output:
docker compose logs -fLeave the log stream running while you authenticate and verify the initial file layout. Stop following logs with Ctrl+C; that detaches from the output and does not stop the container.
Provision the official Hytale files
The container needs the official assets and server binaries. There are three supported ways to obtain them:
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Downloader package
Hypixel Studios’ downloader can create a package with:
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./hytale-downloader -download-path game.zipExtract the resulting package so the mounted data directory contains the assets archive and server directory. A typical manually provisioned layout is:
./data/
Assets.zip
server/
HytaleServer.jar
...The exact capitalization and directory expectations can vary by image. Follow the selected image’s README for whether it expects server, Server, or another launcher path, but keep the official Assets.zip paired with the matching server files.
Launcher installation
If the launcher has already installed Hytale, copy the corresponding Assets.zip and Server/ contents into the host directory mounted at /data. Do not mix an older asset archive with newer server binaries during an upgrade.
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Some image configurations can download the payload during startup. The Hybrowse-based automatic downloader currently supports Linux amd64 only. On ARM64, automatic download may fail even though the Hytale server itself supports ARM64; use manual provisioning or run the container as amd64 under emulation instead.
Complete first-run OAuth authentication
On the first start, the logs display a device-login URL and a short code. Open the URL in a browser, enter the code, and approve access for the server. The authorization page is https://accounts.hytale.com/device.
The example image documents separate downloader and server OAuth clients. Consequently, a clean deployment can show two authorization prompts: one for obtaining files and one for the running game server. Complete each prompt shown by the logs rather than assuming the first approval covers both.
The server’s command-line device flow is /auth login device. If you need to perform it from an attached console, use the image’s documented console mechanism and then enter the displayed code in the browser. Authentication state is stored under the persistent data path. Removing the data directory removes those credentials and the saved world, so do not treat it as disposable container cache.
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For a hosting fleet, Hypixel Studios documents non-interactive credentials through --session-token and --identity-token, or their corresponding environment variables. Game sessions expire after one hour and refresh automatically; the provider guide gives OAuth refresh tokens a 30-day offline TTL. Design a re-authentication procedure for a host that may remain powered off longer than that period, and protect token-bearing files and environment values as secrets.
Publish the correct network endpoint
Hytale normally binds to 0.0.0.0:5520 and carries game traffic with QUIC over UDP. Make the same protocol choice at every layer:
- Publish
5520/udpin Compose, as shown above. - Allow inbound UDP 5520 in the operating system firewall on the Docker host.
- When the host is behind a router, forward UDP 5520 from the public interface to the host’s LAN address.
- Give players the public IP address or DNS name and the UDP port if your client setup asks for an explicit endpoint.
TCP forwarding is not required for the game connection. A port test that checks only TCP can report failure even when the Hytale service is healthy. Test from a second network or have a player attempt a connection while watching the container logs.
Understand persistence, saves, and upgrades
Mounting ./data:/data keeps the important state outside the replaceable container layer. That state can include OAuth credentials, worlds, configuration, logs, downloaded mods, and downloader credentials. The Hybrowse image records downloader credentials at /data/.hytale-downloader-credentials.json; authenticated server credentials are also persisted when configured as documented by that image.
Back up the data directory while the server is stopped or while the image’s backup feature has produced a consistent snapshot. Keep backup copies outside the live world volume and, ideally, on separate storage. A backup on the same disk does not protect against disk failure or accidental deletion.
Keep Assets.zip and its matching Server directory together. Copying only the JAR, or combining assets from one release with binaries from another, can produce startup errors or subtle content mismatches.
How the official update wrapper behaves
The official wrapper checks for updates on a default hourly schedule. When it finds staged binaries or assets, it exits with code 8 so the supervisor can restart it. During replacement, the wrapper preserves configuration, saves, and mods; the expected parent layout contains Assets.zip, a launcher script, and Server/.
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For a Compose deployment, let the restart policy bring the service back after the wrapper exits. Watch the transition with:
docker compose logs -f hytaleBefore an update, take a separate backup and confirm that the host has enough free disk space for the staged files. If the container repeatedly exits, inspect the last log lines and verify that the assets archive and server directory still belong to the same release.
ARM64, Apple Silicon, and amd64 hosts
Hytale’s server supports both x64 and arm64 architectures. The limitation is the automatic downloader in the Hybrowse image, which currently has a Linux amd64 binary because the official downloader archive does not include Linux arm64.
| Host and method | Expected result | What to do |
|---|---|---|
| Linux amd64 with automatic download | Supported by the documented downloader path. | Use the image’s normal bootstrap flow and persist /data. |
| Linux arm64 or Apple Silicon with native arm64 server files | The server can run, but automatic downloader support is not available in the image. | Provision Assets.zip and Server/ manually from a supported machine or launcher installation. |
| ARM64 host forced to amd64 | Can work through emulation, with additional CPU overhead and slower startup or file operations. | Add platform: linux/amd64 to the service only when manual provisioning is impractical, then monitor performance. |
Do not infer that a successful image pull proves the downloader is compatible with your CPU architecture. Verify the architecture of both the image path and the downloader binary.
Size memory and CPU for real workloads
The documented minimum is 4 GB of memory and Java 25. That is a bootable baseline, not a player-count promise. Increase the memory ceiling and CPU allocation as the simulation becomes more demanding.
View distance
View distance is one of the largest resource drivers. Doubling it quadruples the world area loaded and simulated. Change it conservatively, observe actual memory and CPU use, and avoid raising it simply because the host has unused disk space; view distance primarily affects active simulation and memory pressure.
Players, entities, and mods
Concurrent players, high entity counts, mods, and large content packs all add work. A quiet test world can run comfortably at the minimum while a busy modded world cannot. Use the Compose memory setting or JVM options as a ceiling, then monitor container CPU, resident memory, garbage-collection behavior, and tick responsiveness.
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Storage
An NVMe SSD is strongly recommended by the image documentation. Fast storage helps world and asset access, but it does not compensate for insufficient memory or CPU. Keep the live data directory on reliable storage and place backups elsewhere.
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The example image documents optional backups, mod downloads, health checks, and a console pipe. Enable only the features you understand and can secure:
- Schedule backups to a destination separate from the live world directory, and test restoring one.
- Use mod-download automation only with trusted sources and pin versions where possible.
- Enable health checks so an orchestrator can distinguish a running process from a responsive server.
- Restrict console-pipe access to administrators; do not expose an unauthenticated management socket.
Keep operational configuration in a version-controlled Compose file, but store OAuth tokens and other secrets outside a public repository. Set restrictive permissions on the host’s data directory and on any environment file containing credentials.
Troubleshooting common failures
The container exits immediately
- Read the complete startup output with
docker compose logs hytale. - Confirm that
Assets.zipand the expectedServerdirectory exist beneath the mounted data path. - Check that the payload is from one release and that the image’s documented path matches your directory names.
- Verify that the container has access to at least the configured memory ceiling and that the host is not terminating it for out-of-memory use.
The logs keep requesting authentication
Complete every device prompt shown, including a possible downloader prompt and a separate server prompt. Confirm that /data is a writable persistent mount; an unwritable or ephemeral path prevents credentials from surviving restarts.
Players cannot connect from outside the LAN
- Confirm the Compose mapping ends in
/udp. - Allow UDP 5520 through the host firewall.
- Check the router’s UDP forward and ensure it points to the host’s current private address.
- Verify that the server is listening on
0.0.0.0rather than only on loopback. - Test from a different network; testing the public address from inside some routers fails because they lack NAT loopback.
An ARM64 deployment fails during download
Use manual file provisioning, or explicitly run an amd64 image with platform: linux/amd64 and an emulation layer. Manual provisioning avoids downloader architecture limits and usually gives more predictable performance.
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Inspect the exit code and recent logs, then verify disk space, write permissions, and the expected parent layout. Restore the last known-good backup if staged files are incomplete, and do not delete the persistent world data while diagnosing a binary mismatch.
Production readiness checklist
- Official
Assets.zipand matchingServer/files are present. - Java 25-compatible server files start successfully.
- The persistent
/datamount contains credentials, configuration, worlds, logs, and mods after startup. - OAuth device authorization has been completed and survives a container restart.
- Compose publishes UDP 5520, and the host firewall and router (if applicable) allow the same protocol and port.
- Memory and CPU are monitored under the intended player, entity, view-distance, and mod load.
- Backups are stored separately and a restore has been verified.
- Image tags, update behavior, and the unofficial image’s license have been reviewed.
- Secrets and console access are restricted to administrators.
Licensing and hosting-scale limits
Hytale’s manual lists a 500-server game-license limit. Treat that as a licensing and account-planning constraint for fleets, not as a performance estimate. Each instance still needs its own resources, persistent state, authentication handling, and network endpoint. Confirm current licensing terms with Hypixel Studios before operating a larger service.
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