Systematic Immunity
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About Systematic Immunity
Systematic Immunity is a precision platformer set inside an infected human body. You control a group of 20 white blood cells and try to stop a germ from spawning more germs. Each cell can kill only one germ, so casualties matter.
Move through the body
Run, jump, roll, float, bounce and teleport through inhospitable tissue. The game has 75 levels across three organs, with a boss germ to defeat in each organ.
Levels and biology
Collect snippets of information about the human immune system and biology. You can also unlock extra levels, each with its own collectible info snippets, and create levels to play and share.
Frequently asked questions
The best price for Systematic Immunity is $0.59 at Kinguin. That is 85% less than on Steam, where it costs $3.99. 7 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and Systematic Immunity stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for Systematic Immunity are: Windows Vista, 4 GB RAM, 400 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Systematic Immunity is a single-player game.
Yes. Systematic Immunity is the full base game. You need nothing else to play it.
Buy Systematic Immunity 85% cheaper than on Steam.
Systematic Immunity is available for 85% less in shops such as Kinguin, Gameseal, or Eneba.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.
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