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Build and upgrade defenses inside human organs, using a specialist and active abilities to stop waves of viruses and bacteria.
Released 10 Apr 2015
Defend Human Organs
Build Three Tower Types
Shock Pathogen Waves
Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.
Developed by Alda Games · Published by Alda Games





Defend Your Life: TD is a tower-defense game set inside the human body. You protect organs from viruses, bacteria, and other threats, with battles taking place in areas such as the heart, brain, appendix, and pancreas.
Enemies follow set routes while you place defensive towers in designated spots and improve them to counter the incoming waves. You can also deploy a specialist and activate abilities such as bombs, electric shocks, and adrenaline boosts.
Across 17 battles, you face varied enemy types and two boss fights. Between runs, you can upgrade three attacking tower types and combat bonuses, while choosing from easy, medium, and hard difficulty settings.
Several supplied reviews appreciate the unusual human-body setting and describe the game as an enjoyable, approachable tower defense experience. Some also enjoy its tactical challenge, while others find that the difficulty and repeated replay for upgrades make progression feel grindy.
Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.

Show your tactical and strategy thinking in epic battlefields situated in appendix, pancreas, heart, brain and many others vital organs. Customize build order of towers and use wisely upgrades and mighty spells. Use electric shock, bombard the enemies or support your towers by adrenalin injection. Summon mighty Golem and stop enemies like Flu, Cold, kidney stones or cancer. Everything in outstanding graphics.
Enjoy 17 epic battles in real human organs with interactive
Fight against 20+ different enemies based on
2 monumental boss fights where you will face the Stonekid and Cancer
Command Platelet soldiers and support them in fights
Hero Room with specialists ready to fight under your command
Build and upgrade 3 attacking towers with rich tech tree and don´t forget to support them with tower increasing range, attack rate or damage
Use and upgrade in-game bonuses with strong effect during fight – explosive bombs, electric shocks or adrenaline increasing attack rate of your towers
Enjoy the game on easy mode or accept the challenges of medium or hard difficulties
Read the in-game encyclopedia in order to take advantage of the knowledge about enemies and buildings
Use headphones for engaging audio experience included original music and sound design.
Enjoy the awesome hand painted levels and catchy cartoon animations
Addictive gameplay that will hook you in the human body for hours and hours!
| Platforms | Windows, macOS, Linux |
|---|---|
| Achievements | 20 |
| Age ratings |
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| Controller required | No |
| Website | Official website |