I making a crossover of "colonization" and "port royale". You build colonies and run plantations and trade and fight in America (15th-19th century).

I need "crop fertility" to be region specific (where you can build each type of plantation). The map below is my idea so far.

White = cotton

Northern brown = tobacco

Yellow = sugarcane

Blue = indigo

Southern brown = cacao

Does this make some sence? Historically these crops could grow even more diversely i think but this is narrowed for gameplay reasons. Would you change or flip some of the fertilities? (the crops themselves I am satisfied with).

The region for indigo is extra arbitrary:) I find little references to it so this is what suits me gameplay wise the best right now.

[attachment=32646:goods.png]

You can also overlay real crop production maps over your map of the world, and then use that as a basis for your regions (or general guideline - some or even alot of fudging the lines is fine, if gameplay-important).

For example, if you lay these two maps over yours:

https://en.m.wikipedia.org/wiki/Upland_South#/media/File%3ATobacco_Production_US.png

http://teachinghistory.org/files/cotton.jpg

You get this map:

Some fudging of the lines will ofcourse be required.