I am trying to find out the name of a science fiction movie I think is from the 80s. I saw it when I was a child on television. It is a very obscure movie about a family invaded by some alien beings in their own home and ranch. Some of the scenes are a small tiny alien that befriends one of the smaller children, a scene where a floating machine/robot chases the family up the stairs and when the family hides in a room and slams the door shut, the robot attempts to break it down with a flaring laser. A scene with two monsters in the barn area fighting each other , time shifts, and so forth. Anyone know what this movie is? Anyone know what I am referring to or talking about? I have been trying to figure out this movie out of curiosity it has been killing me as I want to rent this somewhere and see it again. Thanks.