It’s poetic, but the game’s namesake is arguably the most balanced seed available.
Specifically optimized for the Venice expansion features, this map offers great placement for the new "Volcano" islands and massive lagoons. anno 1404 venice best map seeds extra quality
If your goal is to hit a population of 50,000+, you need landmass. Seed 99999 is famous in the Anno community for its oversized islands. It’s poetic, but the game’s namesake is arguably