Zombie Sweeper is a defense action game developed by DD Dream Corp. Available for iPhone, this free game challenges players to keep off the surging zombies from both the left and right sides of the screen. The gameplay involves killing zombies by touching the screen at the right timing. However, mistiming the touch can put the player in a dangerous situation due to attack delays.

The game features 45 types of various weapons and 15 types of unusual special weapons, allowing players to choose from a wide range of tools to fight the zombies. Additionally, Zombie Sweeper offers various kinds of zombies' dying actions and a weapon upgrade system. Players can submit their scores to Facebook and Twitter to compete with friends and share their achievements.

One notable feature of the game is the ability to upgrade weapons, which grants them special abilities and various effects. Zombie Sweeper also supports Game Center and OpenFeint for added social interaction and competition among players. The game has received several updates, introducing new weapons, dying motions, episodes, costumes, achievements, and bug fixes.