Yes Puerto Rico deals with the production and shipping of goods - corn being the least valuable of them. I prefer it to every other game I've played (including Agricola) because of the differing machines you can make to produce your goods out of what's available. As well as the advanced strategy which you can plan many turns in advance, there is only one small element of randomness and the rest is decided by the players, which means it's skill against skill for the most part.