Players try to produce the most valuable commodities in an ever-changing marketplace. They then use those commodities to build towns, or sell them at the best price to secure great profits that can be used to win auctions for the all-important railroads. The profits may also be used to buy powerful buildings that give the players power-ups or bonuses in production. Owning the best towns and railroads determines victory. There can be only one "top dog" in Astoria. Is it you?