Not sure if this belongs in the music category since it's less conventional music, so I've posted it here for now
Resident Evil Dead Aim OST - YouTube
Metroid Prime (Original Gamerip, Remastered) the Complete Soundtrack (OST) - YouTube
The 25th Ward: The Silver Case OST - YouTube
Hitman: Blood Money - OST - YouTube
Don't forget all the Michiru Yamane works mostly in Castlevania, like
Castlevania: Symphony of the Night
Castlevania: Harmony of Dissonance
Castlevania: Aria of Sorrow
Castlevania: The Dracula X Chronicles
Honestly its still one of the best OST's out there, sounds completely unique and is very memorable.