If you thought 7 Wonders was already intense, get ready to level up with the Cities expansion. This add-on cranks up the heat, making the game significantly more aggressive and increasing the interaction between players. The star of the show is the new set of black cards, representing city remains. These cards introduce a variety of game-changing effects: from embassies that remove you from the military struggle of the age, to spies that copy science symbols from your neighbors. There's even a black market for those desperate for resources and cemeteries that drain your opponents' gold while earning you victory points.

Beyond the black cards, Cities expands the horizon with two magnificent new wonders: Petra and Byzantium. If you have a large group, this expansion is a lifesaver, as it introduces optional team rules allowing up to 8 players to join the fray. In team mode, partners sit side-by-side, allowing them to communicate and coordinate their card choices to dominate the age together. For those already using the Leaders expansion, there are new leader cards that specifically synergize with the black cards, adding deeper strategic layers.

The game maintains its fast-paced drafting and building rhythm, but now with more ways to sabotage your neighbors or protect yourself cunningly. It's the perfect expansion for players who feel the base game is too 'solitary' and crave more direct conflict and interaction. Get ready to manage debts, negotiate resources, and build the most imposing city of antiquity, all while trying to avoid being sabotaged by both allies and enemies.