The 2005 "A Sound of Thunder" was an interesting time travel science fiction movie, although the special effects were kind of crappy. I like the movie, but I suspect that it would look dated.
The premise of the movie is that if you time travel back to the time of the dinosaurs and make one tiny little change then you will completely alter the present in horrible ways.
However, I don't buy this premise. The natural forces that alter this world over tens of millions of years aren't going to care didly squat what you did 70 million years ago. That is like saying if I were to spit into the Missippi River at Minneapolis Minnesota that it would cause a flood in New Orleans Louisianna.