: You can combine adjacent facilities of the same type (like Markets, Farms, or Barracks) for 100 gold to create Level 2 or Level 3 versions, increasing production efficiency by up to 1.5x.
Released in the mid-2000s, the base game was a radical departure from its predecessors. It abandoned the abstract city-management screens for a fully realized, continuous 3D map of China. But it was the Power Up Kit —Koei’s term for their substantial expansion packs—that took a bold experiment and refined it into a flawless gem. romance of the three kingdoms xi with power up kit work