I've created a game like Lights Out! (go to http://www.whitman.edu/mathematics/lights_out/ if you've never played).

Here's the link to the simulation:
https://powdertoy.co.uk/View.html?ID=5997
(it doesn't display properly on there, load the simulation in-game to see)

The thing is, it doesn't toggle, only turns on when you press the square.

I'd just like some advice on if it's possible to make it toggle. Only thing I could think of is using having 25 switches that monitor whether each one is on or off, but there's no metal that is completely resistant to PSCN, both PSCN > metal and metal > PSCN. Tell me if you have any ideas.

I'll be making the final version big, but for now this is good for troubleshooting.

Thanks!

I made the large version, but there seems to be a bug with LCRY that causes a neverending loop. Just try holding the spark for a few seconds, you should be able to recreate it.