On paper like that, all the games sound pretty similar, but the actuality of each is surprisingly different.Two months after the car accident that killed Yuu Asou, her fiancé, professional photographer Rei Kurosawa is on an assignment, taking photographs of an abandoned mansion when she sees Yuu mysteriously wandering the halls. Then the fourth entry comes and tries to really mix things up (to varying degrees of success).
All three are far more intense than the first two games with more enemies and a better combat system than the series had previously seen, as well as trickier and more consistent and varied puzzles than the second entries (which with my earlier statement about each game being easier, all the second games also have the easiest puzzles of the original trilogy), but actually maybe end up being the scariest in each of their franchise due to experimenting further with things they did in the past but pushed further than they'd gone before.
Finally, the third game goes back to continuing the first game's plot in some way, one of the main characters from the first game returns, and they focus more on some plot thread that ties into that character's journey and some aftermath from the first game's events coming back to haunt them. All three games also star a monster that has become iconic to the series in some way, and though the first game set what each franchise was, the second game goes further to fully set the series identity and introduces new concepts that now everyone thinks to just be part of that franchise, though they were absent in the first game. All are considered by many to be the best in the franchise by popular opinion of the trilogy, the fan favorite if you will, and do this by making more character-centric stories rather than purely about the situation happening around them, and being more accessible (as all three games are also easier than the games that came before them). The second entry then takes the first success and goes in a very different direction, telling a separate story with new characters with only some loose story connection to the original, but sets-up a brand new scenario. In all three franchises, the first entry has a darker atmosphere with stronger mystery hook, they're all entries establishing a franchise and uncertain there will be sequels so they're mostly self-contained and give off a much stronger feeling of claustrophobia than the later entries manage. I think it's of course also notable that the trilogy of Resident Evil games were completed before Fatal Frame 1 even released, and RE1 & 2 released before Silent Hill 1 (and 3 a bit after), so RE1-3 are from a different era than Silent Hill and Fatal Frame and I imagine both franchises looked toward Resident Evil a bit, which is maybe why they have the following similarity. Click to shrink.It's okay, while all three franchises have similarities, they're also quite different so it's easy to imagine someone could like one or two but not on like one or two of them.