Ao Oni is an Adventure, Horror-Survival and Single-player video game developed by Noprops for Windows. The game mixes the Puzzle-solving and role-playing elements and the story follows the boy named as Hiroshi, who stuck in a haunted mansion with his friend and is invaded by a monster. The player acts as the protagonist with a task to manipulate the haunted mansion, interact with non-player characters, and struggle to rescue as many friends as possible while finding a way out. There are different levels and each level offers set of horrific tasks, in which the player has to solve mind-bending puzzles to progress. The player needs to explore different rooms where he must collect items and use them to solve the problems. To avoid the monsters, the player must carry out the tasks accurately. The game is played from an isometric perspective to interact with environment and non-player characters. With terrific gameplay, well-written story, and smooth controls, Ao Oni is the incredible game as compared to other Horror-Survival games with Role-playing elements.