Puerto Rico is a classic economic strategy game built around a single elegant idea: on your turn you choose a role, but every player gets to take that role's action. This means the game is as much about reading your opponents as it is about developing your own island. Choosing the Craftsman when you have the most production may feed your rivals too, so the best governors weigh how much a role helps everyone against how much it helps themselves.
Your engine grows through plantations and buildings. The Settler brings new plantation tiles, the Mayor supplies the colonists needed to staff them, and the Craftsman converts staffed plantations and matching production buildings into goods. None of these steps works in isolation; a plantation with no colonist produces nothing, and a production building with no worker sits idle. Keeping your colonists, plantations, and buildings in balance is the quiet backbone of a strong position.
Goods only matter once you turn them into money or points. The Trader sells a single good to the trading house for doubloons that fund your next buildings, while the Captain phase pushes everyone to load cargo ships for victory points. Because unshipped goods are lost at the end of the Captain phase unless you have storage, timing your production against the shipping rounds is a constant balancing act. Producing more than you can ship simply hands value to the table.
Buildings are where much of your score is locked in. Ordinary buildings provide victory points and useful abilities, while the large buildings offer big end-game bonuses if you can staff them with colonists. Rushing to buy an expensive building you cannot fill wastes both money and space, so plan your purchases around the colonists you expect to have.
The game ends when the colonist supply is used up, the victory point chips run out, or a player fills all the building spaces in their city. Any of these can arrive sooner than newcomers expect, which is why experienced players track all three throughout. When the final scores are tallied from buildings, shipped goods, and staffed large buildings, the winner is usually the player whose economy stayed balanced from the very first role selection.