A flawed movie that belongs on The SciFi Channel, not in the theaters... First, for those who expect an adaptation of Bradbury's "A Sound of Thunder" that is true to the original source material, you're not going to find it here. A true adaption would only be only 20 minutes long, and has actually been attempted at least once before (on the new series _The Outer Limits_, I believe) that I've come across. To fill out a full feature film the plot would need to be expanded considerably, as is done here.
The most unfortunate part of this movie is that it violates the key feature of the time-travel genre, which is a semi-confusing but internally consistent logic once characters start moving about in time. Unfortunately, this movie's bout with time travel is not confusing at all, and lacks internal consistency for reasons that will become clear once you see the film. This is a problem with the extension of the plot from the original short story, not with the short story itself (though the effects of time travel in that story are trite by modern standards).
The special effects were barely of TV-quality, worse than one would see on those various dinosaur specials on The Discovery Channel or its ilk. The computer-generated backgrounds, which were done fairly well in _Sky Captain_, were lacking here in both imagination and quality.
The film itself is also poorly filmed; it was very grainy and seems that it was filmed by a college student on their super-8 home camera.
The actors, however, were reasonable, and I have no fault with them. I applaud the person doing the casting in not selecting from the usual bevy of "beautiful people".
Overall, this movie is something that I'd expect to find on The SciFi Channel on Saturday afternoon, not something released as a feature film.
On the other hand, I did give it a 5 out of 10 because despite all of its flaws, it's not a painful movie, but something that I wouldn't have minded watching if I were to have caught it on TV some afternoon on The SciFi Channel...