This is the 4th game of the franchaise with number and the last one that deserves the name Silent Hill.
These games have 4 ingredients to be: Epic, Terrifying, Psychological, and Sad.
The 4 titles have this ingredients, but each one stands out with one of these:
Silent Hill 1 - Epic Silent Hill 2 - Sad Silent Hill 3 - Terrifying Silent Hill 4 - Psychological
Silent Hill 1 - Epic Silent Hill 2 - Sad Silent Hill 3 - Terrifying Silent Hill 4 - Psychological