E.G., If I do "Decrease Science Production 2" in one enemy city, reducing the empire-wide science production of that empire by 10% for 6 turns, can I do "Decrease Science Production 3" the same turn in a different city and will it give them a combined -10% + -20% = -30% science production for their empire for 6 turns?



Or will only the stronger effect of -20% be applied? Or only the first effect of -10%? Same question for the other empire-wide actions: Decrease Morale, Decrease Diplomatic costs.



UPDATE: Well I did some tests with the "Decrease Morale" Infiltration action and it appears to not stack, at least in intensity. Not sure if the duration stacks maybe, since I'm not aware of any way to check what currently applied empire-wide infiltration effects you've done to a certain empire, or how much duration is remaining. Wasn't able to check for Decrease Science, since the empire Status Screen seems to just show the unaltered Science output, as it never changed regardless of which Decrease Science action I took, even the following turn.



DOUBLE UPDATE: Follow-up question, does the "Decrease Morale" Infiltration action only take effect in combat between that particular empire and yourself, or does it work even while that empire is fighting other factions?