The Web version seems to be really laggy on some browsers/systems. Please try the Windows build if the Web version gets unplayable.
A bad attempt at a game about guiding charged particles through levels by constructing electromagnetic fields using point charges and coils. Made for the UCSB GDC Fall 2025 Game Jam in less than a day.

How to "play":

• Your goal is to arrange objects to form an electromagnetic field to guide the charged particles so that they avoid the red zones and eventually touch the green zone. The level is considered completed when all the particles are in the green zone at the same time. You lose particles if they touch the red zone
• Use the mouse to move around and zoom in/out
• Drag objects from the hotbar at the bottom to add them into the world; right-click on an object to delete it
  
• Use the scroll wheel on objects to change their properties (see tooltip)
• Click the buttons on the top of the screen to play/pause/reset the simulation
• In the background, the arrows show the direction and strength of the electric field; the color gradient and isolines show the electric potential field; the circles and crosses show the direction and strength of the magnetic field

Yep, I made yet another science toy in a game jam, and this one is actually pretty bad as a game idea... (For a good example, feel free to check out my GMTK2025 submission FractalCraft :) )

I thought this idea could be fun, but I missed a crucial part — every electric charge affects the entire electric field, so your earlier setups almost always break when you start adding more charges, even from very far away. The whole system is also quite chaotic, so changing anything in the earlier parts of the setup would also most definitely break what comes after. Thus, it's almost impossible to make anything interesting by hand.

Anyhow, I had fun making this. I hope you can also have some fun playing around with it a little bit. And perhaps physics teachers would love this? Idk. Just don't expect an actual game from this. :)

FAQ:

• Q: The outside area of solenoids should have the opposite magnetic field!
  • A: Look, this game is already super unplayable thanks to physical accuracy, let's at least make it (relatively) easy to use the magnetic fields.
• Q: The charged particles should have 
  • A: Same as the question above