Yea, I, Predator is a very fun game. The only thing I hate is that you get hungry WAY too quickly. I mean, humans can go around six weeks without food, but apparently antelope can't go five minutes without food, even after filling their bellies way past being "full". Plus, predators have an even longer limit to how long they can go without food, simply because it is hard to get food in the wild. But, I once died from hunger as a cheetah in about a minute.
Very unrealistic. But the rest, like the hunting style of the animals, is realistic. Like the sharks usually have to make a quick sprint from below and aim for their prey's bellies. Cheetahs will stalk and then make long chases, finally bringing down their prey simply with extended claw strokes and bites. Lions must all work together, keeping silent and unnoticed, then all attack one buffalo.