Games have always been fair and balanced and have always been about skill but now whoever pays more with a credit card can get high score. Kreds are perverting gaming. You either offer a free game or a game that you have to pay to play. You don't give some players an unfair advantage over another. Developers need to make a profit but this method is whacked.
Yes I completed the hard and impossible and I used boost towers. They boost damage and can save you money if used properly. There are a lot of videos on YouTube showing different techniques for DTD if you get stuck.
Holy cow Batman! Wave 532 Kills 5214 and you can't see wear you are placing your weapons anymore because the screen is full of flashing colors and explosions everywhere. They somehow managed to overwhelm my almost impenetrable defenses.
Can never infect all countries. Tried over and over again but always 1 or more countries close their borders and never open them. Doesn't seem to matter if visibility is zero.
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