Go to your scenario folder in your EU directory, look for the file "Grand campaign.eug" or something like that. Make a copy of it and rename it to "My game.eug" or something...
Open the file by right click on it, open with word pad. You should now see something like...
header = {
name = "The Age of Exploration"
desc = "scenarios\data\1520.txt\Renaissance.txt"
picture = "scenarios\data\sce1520.bmp"
startyear = 1492
endyear = 1792
SWE = {
desc = "SWE_GC_HISTDESC"
scenariotactics ="SWE_GC_HISTDESC"
countrytactics = "SWE_GC_VPTACTIC"
picture = "scenarios\data\SWE1520.bmp"
missioncountry = "SWE_GC_MISSDESC"
missiontactics = "SWE_GC_MISSTACT"
countrydifficulty = 4
countryeconomy = 3
countrymilitary = 4
countrydiplomacy = 4
missiontype = 1
numcities = 26
numcolonies = 0
numtradingposts = 0
numgold = 500
}
FRA = {
desc = "FRA_GC_HISTDESC"
scenariotactics ="FRA_GC_HISTDESC"
countrytactics = "FRA_GC_VPTACTIC"
picture = "scenarios\data\FRA1520.bmp"
missioncountry = "FRA_GC_MISSDESC"
missiontactics = "FRA_GC_MISSTACT"
countrydifficulty = 7
countryeconomy = 6
countrymilitary = 7
The first SWE = Is showing that SWE (Sweden) is a selectable nation in your game. By changing this to, say PER, you will replace Sweden as a selectable nation with PER (Persia).
Every nation has a set of tags, consisting of 3 letters. Witch are the nations "id".
To find out every nations tag (id) you open the text.csv file in the config folder. This file contains alot of information, check around the row 960 to come to the nation/tag section.