Shadow Warrior is a single-player FPS game developed by Flying Wild Hog.It’s a modern take on what’s it like to be a ninja mercenary today, only with demons being real and deadly. Your character is sent to retrieve an ancient katana and by acquiring it, you find out that the weapon can slay the immortals. You can also use magical abilities and of course use your signature assassination tool — katana to slice and dice the monstrosities coming from the depths of the demon world! You set out to find and combine them, slaying all kinds of unearthly creatures in your path!.