ZDefense – Amazon Free app of the day
Crush the creeps! This tower defense game features geometric shapes on a hexagon grid, recalling the designs of arcade classics. Blast creeps to get cash for tower improvements. Create your own boards and select from three game modes. Not compatible with HTC Hero. Guard your exit wave after wave.
Get it here
http://www.amazon.com/mobile-apps/b/ref=topnav_storetab_mas?ie=UTF8&node=2350149011
http://www.amazon.com/gp/product/B0058OUJA4?ie=UTF8&ref=mas_faad