Werewolf: The Last Warrior (超人狼戦記 Warwolf ウォーウルフ, Chou Jinrou Senki Warwolf Wāurufu) is an Nintendo Entertainment System platform game about a werewolf that made its debut in 1990 in North America. It starred a werewolf character named "Warwolf".
Getting red "W"s made the hero turn into a werewolf, granting him a longer range melee attack, wall-climbing ability. Getting blue "W"s made him turn back into a man. Getting bubbles added to his anger meter and getting five of them turned him into a super werewolf that could jump very high.
The game took place on "Red Earth" -- Earth's second colony planet. Dr. Faryan adventured into a cave and awoke an ancient evil that made him turn into an evil entity. Afterwards, Dr. Faryan created a bunch of evil mutants who imprisoned nearly everyone on Earth. The only hope for humanity is a man named "Ken" who could transform into a werewolf named "Warwolf".