I really like the Gameidea.
But i think it needs some improvements.
If you want to attack it's a lot of clicking to get all dots like on Madrid. I want to shift click on a City to get all dots to the target.
I found the easy stragety is to let your pots stack up between citys and then attack all on one target. There need to be a limit or something.
An upgrade System would be nice. To increase the Mainframe perfomance or upgrade Access Points to Main Frames.
But all in all i like the Game.