Could this be the one tower defense game to heal them all? Quite possibly, as it happens to bear the name Heal Them All.

Created by Sugar High developer Shortbreak Studios, the recently released Heal Them All is a tower defense game with a medical twist:

Commanded by Lieutenant Sicko and General LaPlague, armies of microbes are threatening to attack children and infect their organisms. Face the invaders and wipe them out with medical micro-towers! Smash the waves of bacteria, complete special missions, destroy germ Commanders and use mighty power ups to prevent the fever from rising! Help the patients and Heal Them All!

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Rendered with hand-drawn graphics and chiptune music, Heal Them All presents three campaigns filled with hordes of malevolent microorganisms. It also includes special levels that feature medi-mines, power-up frenzy, and boss germs.

Compatible with iPhone, iPod touch, and iPad running iOS 4.3 or later, Heal Them All is available now in the App Store for free.

All campaigns in the game can be unlocked via a $1.99 in-app purchase. This purchase helps the Cape of Hope foundation, with which the game is developed. The foundation is said to be building the new Department and Clinic of Pediatric Oncology, Haematology and Bone Marrow Transplantation hospital in Wroclaw, Poland.