Fairly difficult!
I liked this game, but it could have been, well, easier. The best thing about it is that it was easy to understand, but everything else was still impossible to keep up with! To think that at the beginning, I thought the red things were the things to look out for! The graphics are still nice and while it is only one screen, it manages to have a good amount of detail. It was also cool to just randomly be where you needed to when the meteors hit. It was too hard to keep up with because so many things were coming at one time.
I guess I am just not really good at this game and at least it was designed well. I wish I knew how many hits to took to get rid of the alien spaceships. Luckily, I do not think you (as the dinosaur) can die by being hit too many times. You probably could have showed the Earth taking more damage as it went on. Then again, I guess that would be kind of discouraging.