Shattered Memories was a stellar game. One of the best in the Wii library, easily. As for Silent Hill I found the series just crawled way too far up its own ass after 2. The "lore" of Silent Hill makes no sense, goes nowhere and worse of all, just isn't interesting.
What I'm hoping Silent Hills might be is a Twilight Zone type anthology game. Investigating different "cases" in a fictional "weird" setting. Give the writers more freedom to work, rather than try to shoehorn everything into some big overarching gobbledegok.
PT is a collection of vignettes, mostly cobbled together from references to other media. Regardless I thought it was technically *very* well made. Sexy hallway action.
Sidenote: No, JJ Abrams does not get a pass "because of mysteries" (though I suspect Lindelof is far more guilty here). Mystery design is a real thing practised by people with a real ability. It was called Weird Fiction once and it was practiced by some incredible authors. Plain obstruction of the audience's capacity to process events is not cool or awesome or artsy or anything. It just makes me tune out and go do something with my life that has value.