geoDefense

An iPhone variation of the popular tower-defense genre of games, geoDefense
offers 30 levels and special challenge modes. While the core gameplay is the
same as other tower-defence type games (place your towers and blast the creeps
before they can get across the maze), the touch-based interface allows for
easy drag-and-drop tower placement and upgrades. The art direction features a
unique vector look with spark bursts and other colorful particle effects used
liberally throughout.

geoDefense