A downloadable game for Windows, macOS, and Linux

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Loopy Particle Simulator is an open-ended puzzle game (Zachtronic-style) where you construct a particle accelerator. Make particles speed up in loops and use collision chambers to create new and exciting particles!

  • 7 Introduction levels
  • a Free Play mode where you can toy with particles
  • a demo level to show an advanced circuit
  • save and load of your creation in Free Play mode

(Particles names are imaginary, sorry for scientists)

Post screenshots of your circuits in the comments or on twitter @NuSan_fx I would love to see them!

First version of Loopy Particle Simulator has been created for Ludum Dare 47 in 72h by:

  • NuSan: code/design/visual
  • Lutopia: music
StatusIn development
PlatformsWindows, macOS, Linux
Rated 4.7 out of 5 stars
(19 total ratings)
Made withUnity
Tags2D, Ludum Dare, Ludum Dare 47, Sandbox
Average sessionAbout an hour
InputsKeyboard, Mouse
LinksLudum Dare


Download NowName your own price

Click download now to get access to the following files:

loopy-particle-win.zip 26 MB
Version 0.2
loopy-particle-linux.zip 29 MB
Version 0.2
loopy-particle-osx.zip 25 MB
Version 0.2


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The game does not work for me.

Is the game only for 64 bit systems?

fucking amazing game


my particles are flinging themselves out of my accelerator at 1000m/s. I need them to be 1200m/s. this is an issue.

Could you please have a browser version

Or make a compatible version for Chrome OS (not the Linux mode though bc not everyone has the know-how to run a Linux program on Chrome OS)


(1 edit)

well sys76 makes linux laptops so        even people without knowledge of how to installm linux can use it 

cool game👍


Panzer VIII Maus time! 

also guys HAPPY 1 YEAR and 7 day!

I am really looking foard to your game!

also guys HAPPY 1 YEAR and 4 day!

I am really looking foard to your game!

More sound and a way to pause stuff please

and also this game is lit 

This game has 5 stars from me so that it can grow/evolve into something so awesome and scientifically accurate that learning about this stuff would be a breeze.

(1 edit) (+1)

Every element from Electron to Ultimion are in this thing, with each 1 of every kind.

Sometimes i ask what i do

I just made a Graviton lamp I guess. Really satisfying game btw

the game is usually fun to play but i have minus point i have to mention

1- The game should be able to be windowed, and not fullscreen without a way to change it

2- its lag when reaching 190 particulles, probably bc of my shitty pc.


More element/Building blocks

maybe make the Ultimion rainbow (Change from red to Purple and etc.) so its would more fitting for its Ultimate Particule thing.

make the freeplay maybe endless instead?

very well thought out and interesting game

I made an optimized full process that can generate Ultimion and store in a speed-preserved confinement


Very nice and compact design! Thank you for sharing!

Circuit i made very quickly as a draft, i call it wackium trap cause all the wackium ends up on the very same collision chamber loop that made them

i like it a loot

is there gonna be more to this?

This is incredibly fun!

(1 edit)

It was so much fun! I would definitely play version with more missions.

Some thoughts I had during playthrough:

  • Ability to move more than 1 element at a time could really improve gameplay
  • Menu hiding everytime I scroll out was a bit annoying
  • After some time with huge amount of particles, electron guns start to work slower and slower

Here is my circuit. It is really pleasing to see loops design become more efficient overtime :)

But It's not really clean circuit haha :D

i see everyone had the hadron problem, i think a 50/50 go through would be nice

I really enjoyed this.


I love the game but would like some more objectives beyond creating particles. Maybe some supply demand system where you have to deliver certain particles.


Really relaxing, amazing game!


I think it could get some optimisation. When creating ultimion, I end up with so many particles that my fps suddenly drop to 1 after a minute.


I uhhh.... did a thing. I need a life...


Ahah, awesome construction, very clean, thank you for sharing it!

(1 edit) (+1)

No Problem! Though I wish there were more particles to make, but overall 10/10


I see I'm not the only one to have all my particles constantly inside the circuits.


its not safe if they're on the outside. Safety is my #1 priority... jk it's looks


pretty cool ! but maybe add the option to stop the game and view the particles. (speed and name) that would make it easier

(1 edit) (+1)

Had fun playing this game! It was kinda relaxing tbh