Castellum ? Maastricht is a strategic board game for 2 to 4 players, where players collect resources to build fortifications and hire trained troops to defend the city against its attackers . But be careful! You do not just want to protect the city, but also defeat the most prestigious enemies. And through clever tactics, you can lead the attackers to your rivals to better protect your own section of the city wall. The people will consider you a hero instead of your rivals!