Is There a Game Like That?

I played like a really simple with my brother before, which was, we look for, i kind of don't really remember. E, did you ges ever play? Well, ok, this isn't really a game. But, you know, when you're in a car and it's raining outside, and there's like, raindrops that trickle on to your window? Yes, i use to always like, pick one and then like, watch its trail all the way down,. It would like merge with other raindrops. So then it's kind of like, i don't know if fun is the rightay, but it's something to do.