The gameplay in Fatal Frame is centered around exploration, puzzle-solving, and combat. Kei must explore the village, gather items, and solve puzzles to progress through the game. The combat system involves using the Camera Obscura to exorcise spirits, which can be a challenging and intense experience. The game also features a unique sanity system, where Kei's mental state can affect the gameplay.
There are several reasons why the PSP ISO version of Fatal Frame remains a fan favorite. One reason is the game's faithfulness to the original game. The PSP version retains the same atmosphere, story, and gameplay as the original, making it a great option for fans who want to experience the game on the go.
Another reason is the game's portability. The PSP was a portable console, and the Fatal Frame PSP ISO version allows players to take the game with them wherever they go. This made it a great option for players who wanted to experience a survival horror game on a commute or during a long trip.