In Praetor you will take the role of a Roman engineer and you will work together with the other players to build a magnificent city. You will manage your limited resources wisely and look for new ones, you will recruit new Workers while your old experienced ones will retire, you will build settlements to keep the population happy and you will praise the Gods to earn their favor. Caesar will reward you if you give away precious resources to build Hadrian's Wall thus increasing your chances of becoming Praetor.
Every turn you will place your Workers on previously built City Tiles to gain resources, Morale, new Workers or Favor Points. You may also assign Workers to build new City Tiles or spend resources to meet Caesar's demands to gain Favor Points. At the end of each turn, you will have to pay your Workers. Otherwise, the mood in the city will deteriorate.
Most of the actions your Workers will perform will help them gain experience. They will become increasingly skilled in collecting resources. Your most experienced Workers will eventually retire and bring you additional Favor Points but you will still have to show solidarity and pay them until the end of the game.
The game ends when there are no more City Tiles available or when Caesar has no more demands for resources. The player with the most Favor Points will be appointed Praetor and win the game.