Scale

All buildings have floors (stories if you're old-fashioned). SCURK graphics, on the other hand, are made up of pixels. So, the first decision to be made when SCURKing a new building is "How many pixels high will each floor be?". The sky is the limit, of course (the top of the tile anyhow), but the sizes that seem to work best are 3-, 4-, and 5-pixel high floors. Of these, the 4-pixel high scale - which I call "4 scale" - is probably the most versatile, although there have been some fantastic tiles made in 3 scale.
 

3 scale 4 scale 5 scale
Much larger than the 3, 4, or 5 scales and you start to run out of space in which to do a decent-sized building on a tile - although I have done an occasional 6 scale building when I needed extra space for detailing. On the other hand, 2 pixels is as small as you can go. It's hard to do any meaningful detailing at that scale, but it is great if you want to do a REALLY tall building (Empire State) - how else are you going to fit that many floors on one tile?. As I said before, 4 scale is probably the most versatile as it gives a good balance of available space for detailing versus the overall size of the building - see my section on windows.
 
3 scale 4 scale 5 scale 6 scale

To a certain extent, you can mix and match scales within a tileset and even within a single tile. If you stick to the 3-4-5 scale range you don't have to great a risk of having buildings that are obviously out of proportion. I like to put multiple buildings on a single tile (going for that "downtown", "built-up" look), so I usually surround a 3 or 5 scale building with 4 scale buildings to blend it into my tile set. I suppose that you could do the same thing on a single-building tile by putting 4 scale ground-level details around a 3 or 5 scale building.  Likewise, I suppose that if you work with any three consecutive scales (i.e. 4-5-6 scales or 5-6-7 scales) you should get proportional looking results.
a mix of 3, 4, and 5 scale

Besides shifting scales between buildings, you can often get very good results shifting scales in the same building. Remember, 3 scale is good for fitting a lot of building onto a tile, while 5 scale is good for detail and 4 is good for both. Often only the top and bottom of a building has a lot of detail while the middle is a long row of windows. So, make the middle at 3 scale and the top and/or bottom at 4 scale! A 4 scale middle with a 5 scale top/bottom also works. Here is an example, which goes from 5 scale to 4 to 3: 

The most important thing to remember about scale is that it is not a rule, but rather a guide, a way of measuring up relative sizes of structures and keeping everything in proportion.
 
 


 
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