I started building this city with in mind to use the least "sprites" as possible per citizen. So most of the excess of work force went into hospitals and academies (30 workers, 2 sprites). The city had to be profitable and stable. I did not use small temples, wasting as little sprites as possible. Also I used libraries in stead of schools for the same reason. I admit this city is rather dull and repetitive, but I was proud to see it grow beyond 30K. This is the limit of this city design. To my opinion, it is possible to build even a larger city, with a more compact city design, so less active sprites are wasted carring supplies over long distances. Keep those poeple waiting inside! I used small casa as "standard" housing type. It is possible that another housing type gives a better "sprite"-ratio. I never calculated it. Can you build the 35K city?