Sid Meier's Civilization Vi -

Players can accelerate research by performing specific in-game actions. For example, building a city on the coast provides a "Eureka" boost to the Sailing technology.

Unlike previous games where all buildings were housed in a single city center, players must now place specialized Districts (e.g., Campus, Theater Square, Commercial Hub) on specific map tiles. This requires long-term planning, as terrain adjacency—like placing a Campus next to mountains—is vital for maximizing bonuses. Sid Meier's Civilization VI

A separate Civics tree (parallel to the Tech tree) allows players to unlock new social policies and governments. These are represented by "Policy Cards" that can be swapped to adapt to immediate needs, such as boosting military production or increasing gold from trade. Sid Meier's Civilization VI