So this is some flash game I don't even clearly remember

So hey I made this accountt to ask you about this game. I remember this random flash game I played on Pc sometimes between 2009-2013. I only remember one or two scenes. You played as a human I think it was a guy. He may or may not have a dennim/leather jacket. I know that one of the scenes was set at night. It was at a plaza in the background you could see some houses/shops in the center of the screen right in your way as you come from he left is a fountain made from marble(I think that's the white stone called) I think you couldn't go past it to the right since you could only move left and right and not up and down I think. I think you had a gun at this point in the game. I think that the game had something to do with aliens because I remember some of them running at you from the right in other scene then the one I described, I am not sure if I am not mixing up the aliens thing with some other game. That is about everything I remember. Sorry if it's too hazzy. I don't even completely remember how the mc or the aliens looked like. I was 3-6 at the time but it bothered me since then I tried searching for it again many times but never found anything. Does anyone else remember this game?
What it isn't: -Abuba the alien.