We mixed these tiles in with our basic Carcassonne game. We do not mix castles and farms but build them alongside each other. We've modified the basic game's rules to make it less confrontational, too. The reason I gave it 4 stars and not 5 is because Hill and Dale tiles do not come with a 4 way farm tile and very few 3 way farm tiles ....so I made them by hand. We had to have them. We love Carcassonne and play it 2 or 3 times per week.