A free program for Android, by PT Game Studio.

Age of the Dinosaurs: Jurassic is a survival and adventure game in which you are a hunter who must survive in a world of dinosaurs. You can also play as a dinosaur, raptor, or other hunter-like monsters. You will experience a lot of different things, such as the wind blowing your hair, the sun rising and setting, the day and night cycle, the rain, snow, and other types of precipitation, the temperature, etc. 

You will have to hunt for your food, which will include dinosaurs, raptors, and other hunter-like monsters. You will also need to craft weapons and armor to fend off dangerous monsters. In addition, you will need to build a home and protect yourself from predators.