Tried it, and it was interesting to read. I liked how you used their scientific names to describe them as the Ardipithecus ramidus ventured out into the forest during the search. It was nice to learn about the environment millions of years ago. I liked the fun twist at the end! It looks like you did a lot of research, and that's great!
One suggestion for the first part of the story, would be to tell the time by the sun (or as close as you can get), rather than telling it through numbers to keep the flow of through the game.
Overall, it's a nice and unique game!