A downloadable simulation for Windows, macOS, and Linux

Download NowName your own price


What is this?

Every type of particle has a different interaction with every other type of particle. They attract or repel and they have chemical reactions when they touch. You can drag particles into the analyser on the left and press the button to print a reaction table. 

The reactions can look very lifelike. Sometimes a universe contains a creature with something that looks like a metabolism: one particle goes in, is turned into another particle and propels the creature forward. All following from simple rules.

It is based on a video by CodeParade called Particle Life.  If you set the reaction speed to 0, my simulation will be identical to his.

What are these parameters?

Temperature Determines how much the particles want to move

Reaction Speed How many reactions happen per time unit

Force Magnitude How strong the interactions between particles are

Minimum/Maximum Radius Minimum/Maximum distance for interactions between particles

Number of Elements The amount of particle types. Amount of atoms in the periodic table

And then the seeds! You can share or save universes by copying the seed and typing it into the seed box. Make sure that the number of elements is the same, or it will give completely different results. 


WASD - move around

ZX - zoom in/out

U/I - speed up/down

Drag with mouse - move particles

Thanks to Frans (Concept and Name)

PlatformsWindows, macOS, Linux
Rated 5.0 out of 5 stars
(2 total ratings)
Tagschemistry, particle, Physics, reaction, Sandbox, universe
Average sessionAbout an hour
InputsKeyboard, Mouse


Download NowName your own price

Click download now to get access to the following files:

chemistry-life-windows64.zip 52 MB
Version 1
chemistry-life-mac.zip 54 MB
Version 1
ArtificialChemistry.jar 9 MB
Version 1

Development log


Log in with itch.io to leave a comment.


hxJuL 6 elements. I think the red balls are some kind of lifeform, but I'm not quit sure. They eat yellow I think.

I mean that you can decide the reactions of ALL the Elements. And how they react to each other. I made this post so you can better understand what I'm saying because I'm bad at describing things.

Thanks for your feedback! I made a simulation similar to this one where you can make your own reactions. Click on universe assembler and type something like 

p0 p1 -> p4 p5; 

That will turn type 0 and 1 into 4 and 5. So you can set all the reactions yourself. 

Download it over here:


Could you please make that you can decide how each element reacts to the other. Like so: Blue + red=red is blue now , 1 green shoots away and gives him a bit of boost Forward because green is repulsiv against blue.  Please make this, it would be easier to create life and I would be a very happy Couch potato. Im only twelf so sorry for my writing.

8mkvTpK 6 elements, pepsi rockets

sOv4IP8K0K 6 elements, compress them all into one corner

PHKD1     6 elements its a mesmorizing pattern

is there a difference between the .jar file and the .zip file for windows? thanks.


The .zip file has the Java Runtime Environment bundled with it, its for people who don't have Java installed. If you have Java you can also run the .jar file. 


I just found this and it is really fun to create universes and study them. I found a rather interesting one where pink spheres would "eat" blue particles and shoot them out as yellow bullets that could kill other pink spheres. Really fascinating to watch.  (JznxeBy, 6 elements)

This is absolutely fascinating...would be interested in chatting with you on the inspiration for this project and the tools you leveraged.  I'm not sure how to exchange messages but can share my email if you there's a private message tool.  Thanks.

Hi, thanks for the comment. I can't find a private message tool either but you can email me  here : buuddhaman@gmail.com . 

Can you please make the playfield area full screen with the ui in a retractable drawer. On my screen the interesting part of your sim is only about 25% or less of the application. You've got something great here, please keep improving the ui.

You can move the camera with W A S D and zoom with Z and X. This way you can place the playfield area in the center. 

The table is completely blank for me.

Hi, you need to drag and drop some particles into the square above the table first. Then press the button and it will produce a reaction table.