Loopy Particle Simulator by nusan
This 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
PostJam version add: - save and load your creations (in freeplay mode) - improved performances with lots of particles (still not perfect) - add a "Panic button!" to destroy all particles in case of emergencies
(Particles names are imaginary, sorry for scientists)
(in jam version, due to some unexpected reaction, Positron collision gives Gravitron + Positron instead of Electron ... where did that missing electron went and how a positron mysteriously appears, only top scientist would be able to tell!)
- NuSan: code/design/visual
- Lutopia: music
Post screenshots of your circuits here or on twitter @NuSan_fx I would love to see them!

Other games made for this jam by members of Potico: - Stamp by @linheha and @lucien-catonnet - fractman by @niarkou and @samh - Floody Loops by @alixmic, @diffty, @florian-piette and tomalego
| Youtube | http://lezanu.fr/LD47/LoopyParticle.zip |
| Youtube | https://nusan.itch.io/loopy-particle |
| Original URL | https://ldjam.com/events/ludum-dare/47/loopy-particle-simulator |
Ratings
| Overall | 111th | 4.114⭐ | 37🧑⚖️ |
| Fun | 107th | 4.057⭐ | 37🧑⚖️ |
| Innovation | 6th | 4.486⭐ | 37🧑⚖️ |
| Theme | 28th | 4.457⭐ | 37🧑⚖️ |
| Graphics | 450th | 3.943⭐ | 37🧑⚖️ |
| Audio | 542th | 3.457⭐ | 37🧑⚖️ |
| Given | 16🗳️ | 20🗨️ |
I really liked the music, but I would've liked to hear some sound effects.
Either way, congratulations, it was a really interesting and entertaining game :D!
The music sucks though :/
EDIT: hehehe I was kidding about the music, it's really repetitive though, I wish I had had the time to do more
It definitely has a zachtronics kind of vibe, I love it.
It is very unstable when particles start to go extremely fast. I guess you rely on some kind of collision system that miss the walls between 2 frames ? I wonder if it could be handed through a more "gameplay" approach, like considering the pipes as splines and computing their way along the curves.
One thing I had fun with, was trying to sort out particles following a collision, depending on their speed.
Maybe this could be a path to explore if you are looking to add more mechanics, by asking the player to generate a bunch of successive collisions to generate and filter various sub-particles, that could have specific speed, size and/or lifetime :D
As for feedbacks, it certainly would benefit from some more information on collisions results. Maybe adding some symbols next to exits, to represent the particles created ?
On a side note, music is very repetitive when the level is empty, but once every layer is active it's very nice, good job Lucien o/
Overall a very impressive work ! Congrats !
There's immense fun in the core interaction of channeling and accelerating particles to these insane speeds. The 'filtering by speed' mechanic is also very cool. I had trouble rationalizing my pipeline, but I decided I shouldn't care and enjoyed the game a lot, as a toy maybe more than a puzzle game.
Surprisingly, the apparent "flaws" in the particle behaviors were the part I found most fun : the erratic behaviors at high speeds, the lost particles spraying all around and invading the other pipes when you try to hotfix a part of your circuit, the fact that orthogonal paths are able to cross without interfering.
I also liked the Book of Reactions being separate from the game and not contextual, so that you have to deduce and remember what is the particle you just created, and how to get to the next steps.
Anyway thanks for the game !
On the improvement side, I think the controls could be improved for better quality of life with features such as duplicating multiple pipes at the same time and deleting a pipe with Right click.
Congrats on the game!
- looks nice, Lots of content. The full tutorial was very nice. I did have some trouble building the last element because 300 particles was just not enough. I really liked playing your game.
Fun
- Quite fun
Innovation
- The use of particle physics as a basis for the design was impressive.
Theme
- Nice interpretation of the theme. I had a field full of loops by the end.
Graphics
- I liked the blueprint ascetic and that the particles got brighter the faster they went.
Audio
- The audio changes with the speed of particles you create. It would be interesting to have each particle tied to a different instrument.
I sat down for 5 minutes and an hour has passed.
Neat visuals! Really entertaining experience!
PS : what is Potico? Un collectif ?

Great, relaxing game. I like the take on the theme as well. I just wish there was more to do. A puzzle mode where you have to create a particular particle from a limited set of pipes might be fun to have.
I appreciate this moment when i just look the recipes and try to combines particles.
Great job.
I found the interface a bit unintuitive - maybe I would have liked a way to directly draw the tracks.