The objective of the game is to achieve a certain number of victory points before all other players. There are several ways to earn victory points.
For each settlement you have on the map, you earn 1 victory point.
For each city you have on the map, you earn 2 victory points.
The player with the longest road of five or more segments earns 2 victory points.
The player with the largest number of soldiers in play (minimum of three) earns 2 victory points.
There are a number of special development cards which when played are each worth 1 victory point.