The player has the option of performing research projects in all selected castles with the cross castle research button. To do this, all the player has to do is select the chosen castles and hit the “perform research” button.
Castles that have enough resources and subjects available and have not completed the selected research can be selected with a simple tap on their castle cell. Castles that do not fulfil these requirements will be faded out and can’t be selected.
Speeding up and finishing research
All active knowledge researches can be sped up and completed across several castles. It should be noted, that all current research projects are sped up or completed, regardless of type.
Expanding the research queue
Should the research queue be filled in a few castles, it can be expanded across all castles for a few gold coins.