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Bacterial Invasion for Android

By Silisyum Free

Developer's Description

Protect your body from bacteria!

Prevent bacteria from reaching the healthy cells by throwing the immune cells to them

In the real life, E. coli bacteria use a mechanism based on tumble and swim when they seek for the nutrition. This game utilizes the modelling of this behaviour.

What is the main objective of the game?

To protect healthy cells is the duty of the player in this game. It can be possible by throwing the immune cells to the bacteria.


There are three main characters in the game

1. Healthy body cells

2. Different kinds of bacteria that try to harm the body cells

3. The immune cells

You must select one of the immune cells and throw it to the bacteria which try to reach the body cells. In this way, you can destroy the bacteria. Have fun!

These are the levels of the game


More Bacteria

Some of them are more resistant

Both of them

Heavy Traffic

New members of our family

Funnel Effect

Everyone likes cake

Ice Blocks

Bacteria Generator

Made up Bacterium

Only ones with shells!


Carpenter Shop

"Artificial Wind"

Wake up Service

Fictitious Identities

All Together

Innocent Looking Chaotic Balls

Inharmonious Twins

Law of Universal Gravitation

The Properties of Bacterial Invasion Game and Keywords

It offers a new game logic.

The behaviours of the bacteria are different at every turn.

It allows for developing many different and funny strategies for struggling against the bacteria.

Different kinds of vehicles (buses, trucks, rockets, sports cars and caravans) bring and distribute the bacteria on the scene.

Bacterial Invasion is for free. You can freely download the game into your tablets and cell phones.

It includes refined advertisement.

It is a good and aesthetic game.


This game is a kind of modelling of the phenomena used by bacteria to find their nutrition in the real life. Bacteria tumble so that they can determine a random direction and they swim to this direction making a linear movement. If they come to close their nutrition, they keep going for a long time. If they move away from their nutrition, they stop and tumble again to find a new random direction.

You can find further information on this chemotactic process at the following references:

Passino K.M. "Biomimicry of Bacterial Foraging for Distributed Optimization and Control," IEEE Control Systems Magazine, Vol. 22, No. 3, pp. 52-67, June 2002.



The software tools for Bacterial Invasion game development: Eclipse (Java), Inkscape, Gimp, Paint .NET, and Audacity software

"Mr. Nom" presented in the "Beginning Android Games" written by Mario Zechner and Robert Green is a kind of framework for Bacterial Invasion Game. Thanks for this good book and the codes.

Box2D was used as the physics engine in this game.

Some of the images in the game was drawn and painted by us ( from scratch with the help of Inkscape and Gimp. And some of them were modified and used after downloading from the following websites:

Most of the sound effects and melodies in the game were taken from the following websites and edited in Audacity software. A few of them were produced by us ( by using our microphone and sound recording facilities.


If you like the game please give some stars (like :) and make a comment on Google Play. If you have any negative comment about the game, please don't tire yourself on Google Play by dealing with stars or comments ;-) just send us an e-mail including your critique. We will fix it as much as we can.

Our e-mail:

We are looking forward to your emails!

Full Specifications

What's new in version 1.7


Release June 14, 2020
Date Added June 14, 2020
Version 1.7

Operating Systems

Operating Systems Android
Additional Requirements Requires Android 2.3 and up


Total Downloads 0
Downloads Last Week 0
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