not really hard. just put up your defences, get to the last age, put up all the best towers, then go grab a meal while you kill the enemy and get money. upon your return, buy a couple of those mega warriors or whatever they are called, and win. not really a game you would want to play more than one time. 3/5.
 "Bubble Tanks 2"){kind=icon}
 "Age of War"){kind=icon}