For those unfamiliar with the term, the "-ISO-" in Castlevania: Symphony of the Night -ISO- refers to the game's file format, which was used to distribute the game on various platforms. The ISO file format is a type of disk image file that contains the contents of an optical disc, such as a CD or DVD.
series to introduce non-linear exploration and backtracking, moving away from the "level-by-level" progression of previous Castlevania
For those looking into playing Castlevania: Symphony of the Night
Symphony of the Night received widespread critical acclaim upon its release and has since become a cult classic. The game has been re-released on several occasions, including a 2007 re-release on the Xbox 360, PlayStation Portable, and PlayStation 3.
The game is known for its gothic atmosphere, exploration-based gameplay, and blend of action, platforming, and RPG elements.