In 2011, to commemorate the game's ninth anniversary, Vanillaware released Oni: Anniversary Edition. This updated version of the game features several improvements, including enhanced graphics, smoother gameplay, and a revised user interface. The game's visuals were re-mastered, with crisper textures, improved lighting, and more detailed character models. Additionally, the game's controls were refined, making it more responsive and intuitive to play.

For fans of the game, downloading Oni: Anniversary Edition is a straightforward process. The game is available on various digital platforms, including Steam, GOG, and the PlayStation Network. Simply visit one of these platforms, search for Oni: Anniversary Edition, and follow the download instructions. The game is relatively small in size, making it easy to download and install on most modern computers.

Oni was developed by Vanillaware, a Japanese game development studio known for their meticulous attention to detail and commitment to creating immersive gaming experiences. The game follows the story of Akibrah, a young ninja who must battle against an evil organization known as the Shadow. With its distinctive art style, inspired by traditional Japanese art and anime, Oni quickly gained a loyal following among gamers.