Anno 1800 does not offer true offline LAN multiplayer. However, with persistent internet access and proper network configuration, players can enjoy a stable, low-latency multiplayer experience on a local network. The major limitations are the mandatory Ubisoft Connect dependency, susceptibility to desynchronization, and lack of host migration.
For LAN parties focused on Anno 1800, organizers should prioritize a powerful host PC, wired connections, and frequent saving. If offline LAN capability is a strict requirement, earlier Anno titles (e.g., Anno 1404 with its “DirectPlay” LAN mode) or other RTS games remain better choices. Nonetheless, Anno 1800’s cooperative and competitive multiplayer over LAN, when working correctly, provides hundreds of hours of locally networked industrial revolution gameplay.
Appendix – Useful Ports for Anno 1800 (UDP)
Report compiled based on game version 18.x (post-Game of the Year Edition).
Anno 1800: Multiplayer and Local Connectivity supports a robust multiplayer framework that allows for both competitive and highly collaborative play. While the game primarily uses an online infrastructure, there are specific ways to enjoy "LAN-style" sessions with friends. 🏗️ Multiplayer Overview
Multiplayer in Anno 1800 can accommodate up to 16 players simultaneously. Teams: Players can be divided into up to four factions.
Co-op Mode: Multiple players (up to four) can control the same faction, sharing resources, ships, and islands. This is widely considered one of the most rewarding ways to play, as it allows for role specialization—for example, one player managing the Old World while another handles New World logistics. anno 1800 lan multiplayer
Competitive (PvP): Players can race to reach victory conditions or engage in naval combat.
AI Integration: Open slots in any match can be filled with AI opponents to balance the challenge. 🌐 LAN and Connectivity
Though Anno 1800 does not feature a "Legacy LAN" button in the traditional sense, players can achieve the same effect:
Online Requirement: The game typically requires an internet connection to authenticate through the Ubisoft platform.
Simulated LAN: To play in a local network setting across the internet or within the same house, players often use third-party virtual LAN solutions (like Hamachi or Radmin VPN) if they wish to bypass certain regional server constraints, though standard multiplayer invites are the intended method.
Invite System: Multiplayer sessions are generally invite-only. You must add friends to your Ubisoft account to invite them to a game. Anno 1800 does not offer true offline LAN multiplayer
Public Games: There is an option for "Public Games," allowing anyone in the community to join. 🛠️ Multiplayer Setup Guide How to Start a Session (PC) Select Multiplayer from the main menu. Choose Host New Game. Use the "+" icon to invite friends or add AI.
Toggle "Public Game" or "Friend Game" (Friends can join without an invite). Modding in Multiplayer
You can use mods in multiplayer, but every player must have the exact same mod files and versions installed. The game will notify you if there is a mismatch with the host's setup. 💡 Key Strategies for Success Newspapers | Anno 1800 Wiki | Fandom
You will need:
Step 1: Go Offline (Optional but recommended) To ensure traffic stays local, both players should set Ubisoft Connect to Offline mode after logging in. This prevents the game from trying to bounce data through remote servers.
Step 2: Launch and Host
Step 3: Join via Friends List (The LAN trick)
Step 4: Verify you are on LAN Once in-game, check the connection icons next to player names. If you see green bars with low latency (1-5ms), congratulations—you’re effectively playing over LAN.
| Problem | Likely Cause | Solution |
|---------|--------------|----------|
| Game not visible in lobby | Firewall blocking UDP ports | Allow Anno1800.exe and Ubisoft Connect in Windows Defender / third-party firewall. |
| “Failed to join session” | Different game versions or DLC mismatch | Verify all players update game and disable mods temporarily. |
| Constant desyncs | Mod conflict or one player has corrupted cache | Disable all mods; clear %USERPROFILE%\Documents\Anno 1800\cache. |
| High latency despite being on LAN | PC is using wireless, or router is overloaded | Use Ethernet; reduce other network traffic (e.g., video streaming). |
| Disconnect after 10 minutes | Internet drop on any player’s side | Check stability of each player’s internet – even LAN mode requires online. |
The host machine needs to allow specific ports. Even on a LAN, Windows Firewall can block the handshake.
Getting it running is straightforward, but there are a few pitfalls.