This is not an easy task. See this post, there are some cool examples:
https://www.construct.net/en/forum/construct-2/general-discussion-17/can-we-make-natural-effect-lik-139909
I took a look at the post and wow, I just wanted the effect of bubbles touching but someone actually made them come together and deform like actual bubbles! The effect i was looking for was more like marbles wanting to stay together but I'm going to study what they posted in the other post. I realize now I was a bit to in the wrong direction with my explanation but yeah, that really helped out thank you kindly.
Now i just gotta decipher how they did it. ^_^