38) Hitman: Blood Money (PC / 2006 / 82)
How did none of you except radish (in mod chat) get this from the clue? 38 + 9 = 47. The game stars Agent 47.
One of my favourite stealth games ever (there's another one coming a fair bit higher up, though). It was about hiding in plain sight, prioritising objectives and tricking people rather than just sneaking around in the shadows. The latter type of stealth game has its charms, but I thought it was a great shame that Absolution decided to completely abandon the Blood Money mechanic in favour of becoming a Splinter Cell clone.