Just like what the last posts said, I find the feature 'not being able to erease photons' is stupid. I know it is imposible to get rid of photons in real life, but what happen if we accidently flood fill the whole window with photons on a laggy computer?
Some more Tools should be added when adding elements. Like a circle tool or a square tool and maybe add the CTRL Key as a eraser shortcut for the elements so we dont have to constantly go to the eraser. Saves time.
Glitch found: Make a thin line of any solid type of wall on the very bottom of the screen and put some particles on it. They will still be drained through the wall. And by the way, water in low pressure is suppose to vaporize?