While only a fringe Silent Hill fan, I have to say this would be awesome to own.
Besides classics like Zelda, Chrono Trigger & American McGee's Alice, some recent favourite games have had awesomely unique soundtracks like The World Ends With You, Muramasa: The Demon Blade.
& Joe Hisaishi (the dude who scores Hayao Miyazaki's best films) did the soundtrack for a game studio Ghibli did with Level 5, called
Ni no Kuni? (The Another World) & it is on par with some of the best cinematic scoring.