Take the role of clever commander and fight for the most precious aspect of human being. Fight for your life in human body! You are the commander of human body´s sentinels with clear objective: bacteria and viruses shall not pass through the defense system. Way how to deal with enemy hordes is simple. Think tactically, construct and upgrade buildings, reinforce troops, support them with special upgrades and annihilate the enemy with mighty powers. Battlefields are situated in 17 human body organs like aorta, appendix, stomach and you will fight even in brain. But beware! Enemies also use some tactics: Flu divides itself, Nicotinic can be invisibible and so on. Just explore and improve your fights.

Available on



mobile device

mobile device


  • 17 exciting levels
  • 20+ enemy units
  • 4 basic upgradable buildings
  • Bonuses and upgrades
  • Stunning graphics
  • Tactical involvement
  • Addictive gameplay

System Requirements

OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1, Windows Phone 8
Architecture ARM, x86, x64
OS Windows 10, Windows 8.1, Windows 10 Mobile, Windows Phone 8.1, Windows Phone 8
Architecture ARM, x86, x64

Additional info

Published by
Alda Games s.r.o.
Copyright © 2014, Alda Games s.r.o.

Approximate download size
144.51 MB - 698.36 MB


  • Age rating
  • Entertainment Software Rating Board

    Everyone 10+

    Mild Fantasy Violence

    Digital Purchases

This app can
Access your Internet connection
Access your Internet connection and act as a server.
Access your home or work networks
Use an anonymous Microsoft account
Use your music
Use the media items that are currently playing
Use your device network services
Use devices that support Near Field Communication (NFC) services
Send push notifications
Use any of your Windows Phone sensors

In-app purchases
$1.99 - $9.99

Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

Language supported
English (United States)
Čeština (Česká Republika)

Publisher Info
Publisher Website
Publisher Support

Additional terms
Defend Your Life! privacy policy

Ratings and reviews

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Platform: PC

fun and free

fun and free easy to hard




Platform: Mobile

Great for kids

Kids will learn how virus flu could attack the body in a fun way




Platform: PC

Semi Educational

very neat game get you to think :) a little tricky to pick up at first. Once you get the hang of it very fun. Not the normal tower defense game. Here you defend your body from colds, smoking, flu, and other bad things. You also have kill stone kid in the kidneys. if you think bout it, that is like kidney stone :)




Platform: PC

Cute Tower Defense game!

Interesting game play. Challenging but easy to learn.

One person found this helpful.




Platform: PC

Windows 10 has a great TD

Microsoft should garner more support like this from other companies to port games to their app store.

2 out of 2 people found this helpful.




Platform: PC

The last wave of brain level easy is broken!

I'm a huge fan of path/tower defense games. This one is a lot of fun. In medium difficulty,, the enemies start killing your hero with one hit. That's when it became obvious that I should have purchased $$ a better hero before I started playing the game. I wasted all of those level ups on the useless starter hero. Yes, I felt forced into spending money to buy a better hero and some boost items. UPDATE: I unlocked and played Brain level Easy, which is 160 waves. I killed all of the bosses on wave 159. Then, wave 160 never started. I waited and waited. Finished upgrading two buildings. Waited some more. Generated 9999 oxygen (the max). Waited. So, idiot that I am, I replayed the entire Brain level again. Again, I killed everything on wave 159 and wave 160 never started. After working that hard to get through a game, you expect the reward. No wave 160 = no chance of a reward. Med and Hard Brain both work fine. In game link "Contact Us" takes you to password protected page. Useless!




Platform: PC

Fun game to play!

I like that it's a bit educational, and that the violence is not towards another living being. Great fun figuring it out. Thanks.

2 out of 2 people found this helpful.



Ken Hensley

Platform: PC

Still loving this one

I like that the monster boss (not sure if that is what you call it) can be defeated. And, I like the concept. It makes us think about our body and health.

One person found this helpful.




Platform: PC

Simple N Fun!

Nice Graphics. Easy to play.

3 out of 3 people found this helpful.




Platform: PC

Very Kool

My kids and i love this game.

2 out of 2 people found this helpful.



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