Well all my favorite games are my favorites because they let you control animal characters. Rampage, Shining Soul 2, Killer Instinct, Seiken Densetsu 3, Metamorphic Force and so on. The only way I could think to make non furry games furry would be to replace the human player character with an anthro animal. But that would only be cosmetic and not as much fun as biting and clawing opponents with Killer Instinct's Sabrewulf as a werewolf does or devouring prey humans as the giant wolf, ape and lizard from Rampage.