Sir Derf
Adept
First, the visual...
Drawbridges, Gates and Doorways, say 2x3 or 3x2 or whatever, that you could visually place at the front edges of your city and visually mate up with roads inside your city. For internal use, I would suggest that the center of the piece be considered a road.
Castle towers, in various footprint sizes, with varying items on top, that you could place either at corners or edges of your city.
Walls, 1x1 or 1xn, that you could place around your city, matching up to the drawbridges and towers..
Obviously, the walls are visually meant to be placed on the perimeter, but could be used internal to your city. For the others, it would be visually more interesting (but might be difficult/impossible to implement in game) if their visual extended outside the city footprint somewhat. While square towers could meet up with walls on their edge, a round tower wants to extend a little outside a wall, after all.
Now, the mechanics.
First, I would give them a Culture value, and as such they could be used by any player in any chapter. They wouldn't have to use them in most chapters, as there are many other culture options, but they could if they wanted to.
But, the point would be that they would be introduced to work with a new Chapter - the Knight's Siege. Each of these items would also provide a certain amount of Fortification points. Guest Race buildings in this chapter each require a minimum available Fortification points. For this chapter, you would have to build these fortification pieces, but again, you would decide which pieces and where in your city.
So, these buildings could be Spire prizes, Event prizes, or Crafting recipes. But, they would also be Builder's Hut buildable items starting in the Knight's Siege chapter.
Drawbridges, Gates and Doorways, say 2x3 or 3x2 or whatever, that you could visually place at the front edges of your city and visually mate up with roads inside your city. For internal use, I would suggest that the center of the piece be considered a road.
Castle towers, in various footprint sizes, with varying items on top, that you could place either at corners or edges of your city.
Walls, 1x1 or 1xn, that you could place around your city, matching up to the drawbridges and towers..
Obviously, the walls are visually meant to be placed on the perimeter, but could be used internal to your city. For the others, it would be visually more interesting (but might be difficult/impossible to implement in game) if their visual extended outside the city footprint somewhat. While square towers could meet up with walls on their edge, a round tower wants to extend a little outside a wall, after all.
Now, the mechanics.
First, I would give them a Culture value, and as such they could be used by any player in any chapter. They wouldn't have to use them in most chapters, as there are many other culture options, but they could if they wanted to.
But, the point would be that they would be introduced to work with a new Chapter - the Knight's Siege. Each of these items would also provide a certain amount of Fortification points. Guest Race buildings in this chapter each require a minimum available Fortification points. For this chapter, you would have to build these fortification pieces, but again, you would decide which pieces and where in your city.
So, these buildings could be Spire prizes, Event prizes, or Crafting recipes. But, they would also be Builder's Hut buildable items starting in the Knight's Siege chapter.