Since people keep asking about how formulas work, I have decided to start this topic to show in detail how everything is calculated so if anyone would want to make him/her self a tool of some kind or just like to calculate stuff would have a place to find the necessary information. I would write everything in simple terms so it is clear for everyone, the actual formulas used would not be very useful for most of the players.

Some of the formulas are really complicated to express but are simple to explain so I will be giving simple examples for them:

This is the mythical Formula 1 :To decrease the effect of the geometrical progression (doubling prices every level) we have come up with decreasing coefficient with which we can make buildings and technologies more expensive in a more gentle way so towards the high levels things don't get impossibly expensive too quickly.

So here it is the coefficient by which you must multiply the price of the technologies depending on the level:

Formula 1 is a coefficient, which starts at 1,96 and every level is multiplied by 0.98. After that the base price is multiplied by this coeficient (f=1.96 f=f*0.98 price = price*f).

So the coefficient changes the following way:

Level 1 the coefficient is 1.96

Level 2 is 1.92 (1.96*0.98)

Level 3 is 1.88 (1.92*0.98)

Level 4 is 1.84 (1.88*0.98)

.....

Note: For players who have seen the previous explanation: we have changed the explanation, but the formula has always been the same

....

So, if something costs 100 at level 1:

Level 2 would be 100*1.96

Level 3 would be 100*1.96*1.94

Level 4 would be 100*1.96*1.92*1.88

....

**Everywhere else where a price increase is in percentages and not Formula 1 it works the following way:**initial price: 100

2nd level would cost 110 (100*1.1)

3rd level would cost 121 (110*1.1)

....

**How are the farm limits calculated?**First level is 1500

Second level is 3150 = 1500+1650 = (1500+1500*1.1)

Third level is 4800 = 1500+1650+1815 = (1500+1500*1.1+1650*1.1)

or if it is an excel spreadsheet:

1. 1500

2. 1650 (1500*1.1)

3. 1815 (1650*1.1)

sum line 1 to 3 to find the size of farm 3 and so on

The same way are calculated the mine, lumber mill and stone quarry limits (only there we start at 600 and increase with different percentage)

**How does the population grow?**The population has fixed growth of 30 people per hour, plus 1 for every 1000 population, 1 for every Granary. Then everything is multiplied by the terrain bonus and medicine. So if you have 10 000 population, with 11 Granaries 5th level medicine and Plains terrain, you would have:

(30+10+11)*1.25*1.2=76.5 people per hour

**However after 100 000 the population growth starts to slow down:**at 100 000 after the calculation of the growth formula we take 10 population out, so you have (30+100+Granaries)*terrain*medicine-10..

at 110 000 we take 24 out (this is 10 + 14)

at 120 000 we take 42 out (this is 10+14+18)

and so on.... every 10 000 above 100 000 adds:

10 at 100k

14 (10+4) at 110k

18 (14+4)

22 (18+4)

26 (22+4)

30 (26+4) at 150k

and so on...

So at 150 000 population we are subtracting from the hourly growth the sum of 10+14+18+22+26+30=120 ... soon the growth will seize... medicine and granaries can push the absolute barrier but inevitably the growth will stop.

These are the formulas I can think of that people seem to ask most frequently about... if there are any others post a question here in this topic and I will add them.

PS If anyone makes some kind of web based tools and etc. , he/she is welcome to post a link here for them - if we collect more stuff we could separate them in a different topic.

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**codegrrrl**I n f o r m a t i o n !

You are a man after my own heart Xaoc.

My

Imperia Tools page now has a tool for calculating your enemies melee and fortification levels based on information from the battle report in addition to the distance -> time and military -> point value calculators (now updated to include the blitz realm). You can also

download Polymeron's Economy Calculator 2.4 (excel spreadsheet) there.

But don't miss the time chart section, where you and your allies can update charts that track users online/offline times. Just finished it and it needs testing! Where's the horned emoticon when you need it? *g*

Send me messages via the forum if you run into bugs.. this site is my playground and if I'm in the game, it's likely under development.. I'll add things as I need them until the Imperia admins tell me I've crossed the line and then I'll keep the tools to myself.

(love you guys!)