It isn't that bad, I played on medium for the first couple missions which lasted one minute with the only effort on my end was mousing over magical gold coins while I tapped the spawn unit button. I then tried hard, although I didn't notice any differences. By the time I got to the first mid game advert I collapsed the page in utter boredom. With games like this the only way to add challenge is to make it strategic. I know I only played the first portion of the game but every map was a left to right scrolling window with a few squads of different colored sprites shooting at each other until mine won with little effort.