Unique Improvements

[Cornishman]

When generating a map, are all the unique improvements automatically generated? Also does anyone one else sometimes miss at first pass improvements that don't have a resource under them?

 

[kidcarson]

I believe unique improvements only have a 35% chance of being placed on any random map. the value can be increased in the globaldefinesalt under <DefineName>IMPROVEMENT_UNIQUE_CHANCE</DefineName>