• Magna Mundi Developer's Diary #19: Provincial Warfare (3 of 3)

    When an army marches into an enemy province not defended by another army, the militia there will defend it until a friendly army arrives, it defeats the invading force or the invading force actually occupies the whole province, expelling the defending militia. The system is an abstraction of the % of occupation of the province. So, at 0% occupation the invading army has been defeated while at 100% occupation the defending militia has been routed and the province is occupied by the invader.



    The rolls to change the occupation of a province are every ten days (with a random offset) . If the “Major Offensive” button is selected, the frequency of the rolls are 5 days (with a random offset).


    Rolls are made with ten sided dice.


    The invading player may elect to press the Major Offensive button in the interface to force a faster decision over the Provincial Warfare, while rolling with bonuses. Based on the Maneuver Stat of the side commander he may be able to enact it or not. The chance of the action to be successful is given by the invader commander Maneuver Rating*10%. Thus, a Commander with 3 Maneuver Rating has 30% chance of accomplishing a major offensive. If it fails, the Major Offensive button will remain ghosted until a new Provincial Warfare starts.
    A Major Offensive gives +20% casualties to the invader per turn over the normal casualties. A failed major offensive (Commander cannot pass the roll to comply with player order) automatically makes the invader lose the next round of Provincial Warfare with maximum penalties.


    If the player commands the invader side he can order the armies to Plunder the province. Plunder is automatic and gives the following effects:

    • +2 Infamy
    • -25% on casualties from attrition while combat lasts
    • Pop in Province = -(5 + D5)%
    • Treasury += Base Value of Province + (D6) * 2

    A province cannot be plundered while suffering from the plundered modifier.


    A commander can be appointed to a province or a neighbour one to defend it BEFORE that province is under Provincial Warfare. A Commander influences the province he is appointed to and all neighbour provinces of his country. Influence over his appointed province is doubled.
    When under provincial warfare, the Provincial commander first picked is the one assigned directly to that province. If no commander is assigned there, but more than one are assigned to neighbour provinces of this, the most senior province commander takes charge of the defence. IF there is a tie in the rank of province commanders, the one with the best sum of stats is picked.


    Like in combat, the invader Commander can carry to provincial warfare as many units as his strategic rating allows. Follow the rules on combat for that. Only those troops are eligible for the attrition bonus in case of the plunder order is in effect. If a invader stack is defeated and more invader units are present in the province, these units can now again attempt to seize the province.


    The Commander of the invader side is always sorted by who is the most senior of commanders. If there is more than one of the same top rank, then one with best sum of stats is picked.


    The player may decide to retreat whenever he wants. The forces will retreat to the province of their origin. The occupation will revert to 0, even if more invader units not engaging are present and another Provincial Warfare action begins.
    Coward Commanders may also decide to retreat (5% chance per occupation roll lost). Other than this, all the decision is in the hands of the player.


    When the morale of an invader reaches 0 or the occupancy goes to <0%, he will retreat to the province of origin.


    Two rolls are made per Turn, one for each side. The side that rolls best is the one that wins that turn, either increasing the occupation on the province or losing it.


    Both the invader and well as the defender have their own set of modifiers to the dice roll:

    INVADER (Modifiers of same color non cumulative):

    • Less men than garrison
    • Less than 2* men of garrison
    • Less than 3* men of garrison
    • Less than 4* men of garrison
    • Less than 5* men of garrison
    • Less than 6* men of garrison
    • Less than 7* men of garrison
    • Less than 8* men of garrison
    • Less than 9* men of garrison
    • Less than 10* men of garrison
    • More than 10* men of garrison

    • Artillery > ½ of garrison
    • Artillery > garrison

    • Commander Fire (per point)
    • Commander Shock (per point)
    • Commander Strategic (per point)
    • <11% Occupied
    • <21% Occupied
    • <31% Occupied
    • >69% Occupied
    • >79% Occupied
    • >89% Occupied

    • Major Offensive
    • General Not Ranked
    • General Captain
    • General Colonel
    • General Brigadier
    • General General
    • General Marshal
    • General High Constable


    • Per Level of Fort

    • Neighbour Commander Present
    • Commander Present

    • Commander Strategic (per point)
    • Per % Defensiveness +(*)
    • Mild Winter
    • Normal Winter
    • Harsh Winter

    • >30% Occupied
    • >39% Occupied
    • >59% Occupied

    (*) – Defensiveness gives a % chance every roll of adding D10 to defence. If defensiveness is >100% the D10 is automatically granted and a second chance, based on DEFENSIVENESS – 100 is made for a second D10 bonus.

    This article was originally published in forum thread: Magna Mundi Developer's Diary #19: Provincial Warfare (3 of 3) started by ubik View original post
    Comments 2 Comments
    1. Prussian Saint's Avatar
      God I can't wait!

      Please can you give us a ballpark figure on when MM standalone will be out. It's just it looks so amazing and immersive. Again, can't wait!
    1. SAS's Avatar
      Indeed, this game is going above anything I imagined. Kudos to your Team!