To use a custom map you simply upload an image onto the game, and hit the upload button! This is the same with the rule sets, but with text files.
Maps
Get your favorite image editor, and remember these three colors!
#074891 - Water
#0b9131 - Land
#0552aa - LandWater
all you have to do is use these colors to form the land, and save it as a PNG. Be warned however, because any other colors will be made into their own nations!
Tips: Disable anti-aliasing, and if your program has a grid and pencil tool use it!
Rule Sets (Rule sets broken as of 2/28/18)
A knowledge of JSON is required for this. The rule set system is a bit outdated at the moment and only let you modify nations.
Here is an example of a rule set
{
"#5b0000":[10,50,["Japan"],"Germany"],
"#fe3636":[100,50,["Germany"],"Japan"]
}
now lets deconstruct it!
"#5b0000" <- this is the nation's color
10 <- this is how much points it will start out with
50 <- this is how strong the nation is
["Japan"] <- this is their allied nations //can also be the color of the nation if you dont name them!
"Germany" <- this is the nations new name!