Defend Your Life: TD

Defend Your Life: TD is a tower defense game set inside the human body. You defend its organs from hordes of viruses and bacteria, using towers, upgrades, spells and support units. Its levels and units draw on human anatomy.

Battles in the body

You fight across 17 battles in real organs, including the appendix, pancreas, heart and brain. The levels are interactive, with hand-painted environments and cartoon animations. More than 20 enemies include Flu, Cold, kidney stones and cancer, and two boss fights pit you against Stonekid and Cancer.

Build your defenses

You choose the order in which to build towers and develop three attacking tower types through their tech trees. Upgrades can increase a tower’s range, attack rate or damage. You can also command Platelet soldiers and specialists from the Hero Room, and use or upgrade powerful bonuses during fights: explosive bombs, electric shocks and adrenaline injections that increase your towers’ attack rate. You can summon a Golem to stop enemies.

Difficulty and reference

Choose easy, medium or hard difficulty. An in-game encyclopedia provides information about enemies and buildings. The game also features original music and sound design.