A map seed decides the shape of an entire Anno 1800 campaign — how much room you have, how good your starting fertilities are, and whether the pirates spawn somewhere that will quietly ruin your first ten hours. These are the seeds worth starting on, and the settings that matter at least as much as the number you type in.
How map seeds work
A seed generates the island layout for a sandbox game, but only in combination with your other map settings. The same seed on a different map size or island type produces a completely different world. This trips up most people who copy a seed from a forum and wonder why their map looks nothing like the screenshot.
To reproduce a seed exactly, you need to match all of it: the seed number, the map size, the island size setting, and the map type (arc, atoll, archipelago, corners). If any of those differ, you get a different map. Note the settings alongside the seed whenever you find one worth keeping.
Best all-round seed: 1800
A long-standing community favourite and the best first choice whether you are new or returning. It gives a balanced map with solid starting fertilities and pirate placement that will not blindside you before you have a fleet. Nothing about it is extreme, which is exactly the point — you learn the game rather than the map.
Best for: a first sandbox run, or any playthrough where you want to focus on the economy rather than fight the terrain.
Best for large islands: 111108851
Dominated by large islands with generous resources and genuine room to build, and it conveniently places the pirates somewhat out of the way. The combination matters: a big-island map with pirates parked on your trade route is not actually a comfortable map.
Best for: players who find themselves running out of buildable space in the Old World before they reach the later population tiers.
Best for megacities: 440654298
The seed for experienced players who want to build something enormous. It offers large islands across every map sphere, including one in the resource-dense New World that rivals Crown Falls for size. Having a second Crown-Falls-scale island available changes what is possible — you can run a genuine megacity in the Old World and still have room for a serious New World operation.
Best for: a long campaign aimed at maximum population, or anyone who has hit the ceiling on a normal map.
Settings that matter more than the seed
People over-index on the seed number and under-index on the settings around it. If you want big islands and room to expand:
- Map size: large. The single highest-impact setting. A large map on a mediocre seed beats a small map on a famous one.
- Island type: arc or archipelago. Both tend to produce more usable large islands than corner layouts.
- Island size: large. Obvious, and frequently left on default by people hunting seeds.
- AI opponents and pirates. Reducing or disabling them changes the early game more than any seed will. If your complaint is pressure rather than space, adjust this instead.
- Difficulty separates from layout. You can run an easy economy on a challenging map or the reverse. Do not use the seed to solve a difficulty problem.
Tips for picking a start
- Check fertilities before committing. Your starting island’s fertilities constrain your whole Old World economy. Restarting at minute five costs nothing; discovering you have no hops at hour twenty costs a lot.
- Look at where the pirates sit. Distance from your main trade routes matters more than their difficulty setting.
- Leave room for Crown Falls. It becomes the centre of most late campaigns, so plan the shipping lanes around it early.
- Note the seed and every setting. If you find a map you like, you cannot recover it later from the number alone.
- Try a few before settling. Generating maps is free. Spending twenty minutes comparing three starts is cheaper than fifty hours on a cramped one.
If none of these suit, the Anno 1800 community wiki maintains a running list of favourite seeds contributed by players, and it is the best place to look for something more specific — a particular island shape, a mining-heavy New World, or an unusual layout to build around.