NORMAL TIME STEP VALUE IS '1' (but i recommend setting it to .5 or less... otherwise it takes a while. .2 or lower is very inaccurate) well, i'm not going to actually improve this any further because it IS functional. just download to use it, online all you can do is sit and watch to use, simply add any new sprite to the list, add it's mass to another list, and give it initial velocity and position. (and change its name and one part of it's script (there is a comment next to this part to make it easy to locate).) what this program does, is it simulates gravity between multiple different points. it becomes glitchy when the points become very close. in theory increasing the time step variable (which actually decreases the time step, go figure) will decrease this error, but in my tests it seems to make it worse, so proceed at your own discretion. i don't know how accurate of a simulator this is this is still being made, it is not finished yet