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About Antidote

Antidote: Battle of the stem cell is a defensive strategy game that brings to life the complex processes happening inside the human body.  Users are required to apply scientific knowledge of Enemies (viruses and bacteria) alongside an understanding of Friendlies (Eaters, Producers or Healers), to stop these deadly diseases from attacking the body’s defences (the Stem Cell).  Set in a futuristic lab, under a microscope, this game uses excellent graphics and sound to engage users of all ages.  

Teacher Review

Antidote is a scientific strategy game that brings to life the complex processes happening inside the human body.

Upon opening the game, users are presented with their laboratory.  From here, they have several options: Game Play; Achievements; Settings; Feedback, Background and Sound.  The “Game Play” section, at the bottom of the screen, allows the users to scroll through and select individual levels, however, these remain locked until the previous level has been completed.  Once the desired level has been selected, users are taken to their battleground, where they must prepare to defend the Stem Cell against various viruses and bacteria that try to attack and destroy it. 

Each level begins with an introduction, and when the game is played for the first time, instructions are given.  Enemies, (either viruses or bacteria), each have different attacking capabilities and will seek to find a route to attack the Stem Cell.  The Stem Cell’s job is to create cell walls (Friendlies), which the user can place, by pressing and holding a hexagon.  If a path to the Stem Cell is blocked, the enemy will seek to find an alternative route or if no route is available, it will attack the cell wall.  Cell walls can be changed to different types of Friendlies, for example: Consumers, eat and remove enemies; Producers make sugar, which helps improve defences; Healers slow down enemies or repair damaged cells.  When first playing the game, it takes several attempts to understand the concept, but once past the initial understanding, children are able to begin thinking strategically about how to save the Stem Cell.  As with most games, the levels of difficulty get progressively harder and the type of Enemies/Friendlies change.  As new viruses and bacteria emerge, the available friendlies also develop more expertise (users can tap on a cell wall and change it to something more advanced).  When paused, four options appear, one of which is the encyclopaedia.  This is an extremely useful collection of information, which not only lists the names and type of Friendly or Enemy, but also gives further details about their properties and displays a visual tutorial.  The user can then use this information to plan their next form of defence. 

Academically, this game promotes the love of learning and a general interest in science.  Cleverly, the game play introduces scientific concepts in a child friendly manner with the use of Friendlies and Enemies.  From an education standpoint, children are learning as they begin to acquire this knowledge, but more importantly begin to use this information in a simulated environment.  This introduces problem solving skills as well as developing scientific understanding. 

Returning to the homepage, the music mutes the background music, while the sound button mutes the sounds when buttons are pressed.  On this version of the game, the achievements page does not link to anywhere, while the settings button displays a tiny message reading “reset all progress” in the top left hand corner.  This needs to be a little bigger or perhaps link to a different page where it is made clearer that by selecting this, all progress will be deleted.

Overall, an engaging strategy app which teaching scientific concepts through game play, worthy of a five star rating.

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App Details

Teacher Ratings







Critical Thinking
Engagement and Usability
Life Skills
Academic Relevance
Thinking & Reasoning
Health & Fitness


In-App Purchases - Yes

In-App Advertising - No


Psyon Games

Download Antidote

Screenshots for Antidote

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Antidote : Battle of the stem cell is a casual free to play game played under the microscope. Take control of the body’s defences and protect the precious stem cell from hordes of bacteria and viruses! Can you beat all the levels and find the mysterious dark force behind the infections?

Antidote is inspired by science, which means it’s full of fresh new ideas. It combines a beautiful and unique art style, hand crafted levels, delightfully interesting characters (both friend and foe!). If you're interested in science or looking for a great game to pass the time with, give Antidote a try.

Key features:
- Easy to get started, but hard to beat!
- Adorable characters. Even the bacteria.
- Download and play for free, with fair IAPs, and no adverts.
- Familiar tower defence game, but with science
- Fun for ages 10 to 99 - and below 10 if you play with them!
- Beautiful, challenging levels
- Unlock powerful defences based on real science

What's all this about science?
You've probably played games before that have inspired you and left you with a new passion, and even some real knowledge. Building space rockets, exploring history, being bread... they're all great. That's what we aim to provide with Antidote. You don't need to know anything about science to play and beat the game, but we guarantee that afterwards, you'll know more about it, and probably proclaim how cute Cholera is a little too often.

Fair IAPs? No adverts? Free download?
Right now, Antidote is free with a single in app purchase that lets you play as much as you want, whenever you want. No catch. In the future we're going to introduce a few "power players" upgrades that let you customize the game (a bit like mods), again that will be a one time payment. And then, we have a scheme to help spread science to the whole world (top secret!) but also, totally fair. And yeah, we don't like adverts ruining our games, so if you want to see adverts, you'll have to go elsewhere... Sorry!

Early access, beta?
Antidote is in beta/early access right now - which means that it might change a lot before we finish. If you want a polished product, don't worry - just follow us on social media and we'll let you know when it's done. If you're interested in playing what is already a very full, deep experience, and affecting the development, what are you waiting for! Download, play, and let us know what you think!

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