This is like my project Explosion..., but without 'run without screen refresh'! The coding is quite simple... The explosion will go on forever. April 18, 2021: just came back to this and saw that if you stare at the dot in the center of the screen for a few seconds (fullscreen works better), you will find that the dots have a slight (very dark) trail behind them! It's just your eyes tricking you...
Ok, I don't want to have to credit myself and you every single time I share a project, so I'm going to leave this blank.