ARM64 Support

Running Hytale Server on ARM64 devices (Apple Silicon, Raspberry Pi, etc.).

Limitations

The hytale-downloader binary is x64 only. On ARM64 systems, automatic download of game files is not available.

INFO

The Hytale server itself (Java) runs natively on ARM64 without issues.

Installation on ARM64

Option 1: Manual File Download

1. Download game files from hytale.com on an x64 machine:

   • HytaleServer.jar
   • Assets.zip

2. Transfer to your ARM64 server:

scp HytaleServer.jar Assets.zip user@arm-server:~/hytale/server/

3. Disable auto-download in .env:

AUTO_DOWNLOAD=false

4. Start normally:

docker compose up -d

Option 2: x64 Emulation (Development Only)

For development on Apple Silicon Macs, you can use Rosetta/QEMU emulation:

# Build with x64 emulation (slower)
DOCKER_DEFAULT_PLATFORM=linux/amd64 docker compose -f docker-compose.dev.yml build
DOCKER_DEFAULT_PLATFORM=linux/amd64 docker compose -f docker-compose.dev.yml up

WARNING

x64 emulation is significantly slower and not recommended for production.

Apple Silicon (M1/M2/M3)

Recommended Setup

1. Download files manually (Option 1 above)
2. Run native ARM64 containers

# Native ARM64 (fast)
docker compose up -d

Development Setup

For the best development experience on Apple Silicon:

# 1. Download files on another machine or use a VM
# 2. Place in ./server/ folder
# 3. Run dev environment natively
docker compose -f docker-compose.dev.yml up --build

Raspberry Pi

Requirements

• Raspberry Pi 4 or newer (4GB+ RAM recommended)
• 64-bit Raspberry Pi OS
• Docker installed

Setup

# Install Docker
curl -fsSL https://get.docker.com | sh
sudo usermod -aG docker $USER

# Create project
mkdir ~/hytale && cd ~/hytale

# Download compose file
curl -O https://raw.githubusercontent.com/ketbome/hytale-server/main/docker-compose.yml
curl -O https://raw.githubusercontent.com/ketbome/hytale-server/main/.env.example
cp .env.example .env

# Configure (reduce RAM for Pi)
nano .env

Recommended Pi configuration:

JAVA_XMS=1G
JAVA_XMX=2G
AUTO_DOWNLOAD=false

Transfer Game Files

From your main computer:

scp HytaleServer.jar Assets.zip pi@raspberrypi:~/hytale/server/

Start

docker compose up -d

Troubleshooting

"exec format error"

This means you're trying to run x64 binaries on ARM64. Solution:

• Use native ARM64 images
• Or enable x64 emulation

Slow performance with emulation

Expected. For production:

• Use native ARM64
• Download game files manually
• Set AUTO_DOWNLOAD=false

Out of memory

ARM64 devices often have limited RAM:

• Reduce JAVA_XMX in .env
• Close other applications
• Add swap space if needed