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Sunkenland Server Not Showing - Sunkenland Wiki

Sunkenland Guide • Updated Jan 22, 2026

Sunkenland Server Not Showing in Browser

If players cannot find your Sunkenland server in the server browser, this guide covers common causes including port configuration, network issues, and server setup problems.

Server Browser Issues: Sunkenland's server browser may occasionally have connectivity issues. If your server doesn't appear, use Direct Connect with your server's IP and port as the most reliable connection method.

Quick Diagnostic Table

Check Why It Fails Fix
Game Port 27015 UDP Port blocked by firewall or router Forward UDP 27015 to the server IP
Query Port (27016 or custom) Server browser cannot query Forward the query port for listing
Server browser bug Only ~20% of servers appear in list Use Direct Connect instead
Server visibility timeout Server drops from list after ~24h Restart the server daily
Dedicated Servers tab Wrong tab selected in browser Click "Dedicated Servers" at top left

Step-by-Step Troubleshooting

  1. Try Direct Connect. If the server browser isn't showing your server, use the direct connect option with IP:PORT.
  2. Check Server Status. Verify your server is actually running and accessible from your network.
  3. Verify Port Forwarding. Ensure UDP ports are open on your router and firewall.
  4. Test Network Connection. Have a friend test connection from outside your local network.
  5. Check Server Logs. Review error logs for any startup or connection issues.

Direct Connect Method

Recommended: Due to the server browser displaying only ~20% of servers, always share your IP address with friends for direct connection.

  1. Get your public IP from whatismyip.com
  2. Share YOUR_IP:27015 with friends (replace 27015 if using custom port)
  3. In-game, use the Direct Connect option to join

Startup Command Example

Sunkenland-DedicatedServer.exe -nographics -batchmode -worldGuid "abc123-def456" -region "us" -maxPlayerCapacity "8" -port 27015 -queryport 27016

Firewall Configuration

# Windows PowerShell (Run as Administrator)
New-NetFirewallRule -DisplayName "Sunkenland Game" -Direction Inbound -LocalPort 27015 -Protocol UDP -Action Allow
New-NetFirewallRule -DisplayName "Sunkenland Query" -Direction Inbound -LocalPort 27016 -Protocol UDP -Action Allow

# Linux (UFW)
sudo ufw allow 27015/udp comment "Sunkenland Game Port"
sudo ufw allow 27016/udp comment "Sunkenland Query Port"
sudo ufw reload

Server Maintenance and Reliability

Regular Restarts: For optimal performance, restart your server every 12-24 hours. This prevents memory leaks and ensures the server remains responsive.

Recommended Schedule: Set up automated restarts during low-traffic hours (typically 3-4 AM local time) to minimize player disruption.

Steam Session Issues

If players see "SessionInfo: IsValid=True" in logs but can't connect:

  1. Re-run SteamCMD: steamcmd +login anonymous +app_update 2667530 validate +quit
  2. This downloads additional files needed after the first run
  3. Restart the server after the update completes

Tip: If the server shows locally but not for external players, the issue is typically port forwarding or firewall configuration. Direct connect bypasses browser issues.

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