

Defend Your Life: TD
Alda Games · April 10, 2015 · Tower Defense, Casual, Strategy, Indie, 2D
Buy the Defend Your Life: TD key for Steam from CJS CD Keys at $2.39 — the cheapest of 2 stores we compare.
Where to buy Defend Your Life: TD — official stores
Cheapest Defend Your Life: TD keys — keyshops
Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.
Defend Your Life: TD price by region
Defend Your Life: TD costs £1.78 in the United Kingdom, $2.39 in the United States, $2.39 in Georgia (USD), €9.75 in Europe (EUR), CA$12.99 in Canada, A$14.50 in Australia, NZ$14.75 in New Zealand, R$32.99 in Brazil and zł45.99 in Poland right now.
| Region | Best price | Official store | Key shop | Stores |
|---|---|---|---|---|
| £1.78 −79% | £8.50 | £1.78 | 2 | |
| $2.39 −76% | $9.99 | $2.39 | 2 | |
| $2.39 −62% | $6.29 | $2.39 | 2 | |
| €9.75 | €9.75 | — | 1 | |
| CA$12.99 | CA$12.99 | — | 1 | |
| A$14.50 | A$14.50 | — | 1 | |
| NZ$14.75 | NZ$14.75 | — | 1 | |
| R$32.99 | R$32.99 | — | 1 | |
| zł45.99 | zł45.99 | — | 1 |
Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.
Screenshots
About Defend Your Life: TD
Defend Your Life is a tower defense game set inside the human body where you strategically place towers and cast spells to battle viruses, bacteria, and diseases across 17 epic organ battlefields. What sets it apart is its creative anatomical setting combined with deep customization options, 20+ enemy types, powerful special abilities, and stunning hand-painted visuals that turn immunology into an addictive tactical challenge.
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.
Defend Your Life: TD — game info
- Platforms
- Windows, macOS, Linux / SteamOS
- Player modes
- Single-player
- PC Game Pass
- Not included
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
Defend Your Life is a tower defense game set inside the human body that offers traditional tower defense mechanics with constant ability activation and a hero unit, but suffers from significant balance issues that create a grinding loop reminiscent of mobile freemium games. Players note the game becomes progressively difficult, often requiring repeated farming of earlier levels for resources and hero experience, along with technical issues like audio affecting performance.
Brain level turns in to running madness4 found this helpful
It's a traditional tower defense. You place your towers in fixed spots and upgrade towers. In addition, there's abilities you have to activate constantly during the run. There's also a hero you can place down like a tower. UI & cartoon is ok. Windowed mode available. It's quite difficult. You will need to redo previous levels to get more consumables, hero XP just to get past maps beyond the first two - there's quite a bit of grind. This is ok if you don't mind grinding the same map over and over again. You will get most of the achievements just by grinding. The grind made the game feels like a mobile fremium port, where the difficulty ramped up so you will buy MTX consumables or grind for free. If you don't mind that, give it a go. For players who don't mind grinding the same maps for incremental upgrades. Not for me.3 found this helpful
I absolutely do NOT recommend this ♥♥♥♥♥♥♥♥ game, I got all achievements and I only have this many hours because of SAID achievements. What made this experience so terrible you may ask? Well, not only was I mind-numbingly trying to get the achievements, the stupid music score playing NONSTOP REPEAT and having to listen to my NOW EX HATE ME DURING OUR RELATIONSHIP BECAUSE I WAS ♥♥♥♥♥♥♥ PLAYING THIS STUPID ♥♥♥♥ AND NOT GIVING HER ATTENTION And by golly this did NOT make the experience anymore fun. I do believe this game had a hand in ending my relationship. Maybe, I am the problem. But maybe it isnt the break ups that truly matter but a break up of plaque and harmful bacteria is what truly matters in living life. fk this game bro.2 found this helpful
You have to mute the game via the in game sound icon to get more fps... Never ever have I seen a game with such a problem. DEF not worth 10 dollars!1 found this helpful
Defend Your Life is a tower defense game developed and published by Alda Games that distinguishes itself through a clever and approachable concept: instead of defending castles, roads, or abstract lanes, you are protecting the human body from invading pathogens. This biological framing gives the game an immediately recognizable identity, turning familiar genre mechanics into something playful, educational, and surprisingly charming. From the start, the game presents itself as accessible and lighthearted, but beneath its cartoonish exterior lies a thoughtfully structured tower defense experience that rewards planning, adaptability, and persistence. The core gameplay follows traditional tower defense principles, with enemies traveling along predefined paths and players placing defensive structures to stop them before they reach critical organs. Each level represents a different part of the body, such as the heart, brain, or digestive system, and these environments subtly influence how encounters feel. The enemies are stylized representations of viruses, bacteria, and other threats, each with distinct behaviors, strengths, and weaknesses that require different tactical responses. Tow…
A standard tower defence copy, that looks and acts like a mobile game. Suppose its okay, but get it on sale.
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