I tried this a half dozen times and I don't get it.
The instructions seem to be a lie. (instruction says left click, but space places bridges for me)
Combat? depletes my brains so that I can no longer place any bridges. Combat doesn't seem to follow any rhyme or reason as to whether lining up colors from the recalls is supposed to remove those same colors or not.
Some brains seem impossible to line up and so can't pick them up
I have no idea what causes the switch between the light and dark space.
It looks interesting and I'd like to like it but I just don't really understand it.