I have seen only the first Tremors movie. It was interesting at first until the exaggeration near the ending part. I chanced upon the #2 on cable tv but I had lost interest so I did not watch it anymore. For me, a fantasy movie should be realistic and must abide with logic. When I see something that is impossible, I easily lose interest.
I've seen the first movie as well and I decided not to watch that movie or it's series from then on. I respect that some people liked it but really definitely I'm not one of them. Title should be silly monsters. Peace out!