Dinosaur Hunting Jurassic

Hunting dinosaurs free game whose goal is to protect primates (our ancestors) from dangerous dinosaurs of the Jurassic, Cretaceous and Triassic era.
You have to keep alive primate who will be attacked for dangerous dinosaurs (T-Rex, Spinosaurus, Raptor, Triceratops, Brachiosaurus, Pteranodon, Stegosaurus, Dimetrodon, Paradophosaurus, ...).
You will have many weapons, ammo and bullets to use for preserving primates alive. And you will have to keep you alive alone yourself.
It's a realistic game in 3D with free moving and stereo sound.
You will have missions with different difficult levels. You can use different weapons.
Hunting dinosaurs at night, double points!
You will feel danger and feel responsibility for your life and that of others at all times.
This is a free game.

NOTE : animals are from different eras but it is a fantastic game.