16. The Hydra (God Of War)
https://www.youtube.com/watch?v=bd8vvUHp2xA God of War is one of Sony's biggest PlayStation exclusives, having released all of its entries on Sony systems, and with a big game franchise comes an even bigger set of epic boss battles. The first game in the series was a breath of fresh air for the action genre, where we had come to settle for standard fare action tales and humdrum combat. God of War not only improved on all of that, but it also offered up one of the most insanely fun boss fights ever; the Hydra. While the Hydra is dispatched very early in the game's opening act, it's like an implant on your brain that you can't get rid of. It sticks with you, even as you're taking down the actual God of War in the final moments of the game. Dispatching of its two extra heads was only the beginning, as the cinematic battle continued with some massively impressive scale that still works to this day. While newer games in the series such as God of War III have upped the scale even more, the Hydra still sticks out as some of the most fun you could ever have slaying a mythical beast.