qre3o: I can think of a couple of them most recently Spec ops the line
Can anyone else think of any?
graniteoctopus: Far Cry 2 was heavily inspired by it, to the point of having an area named after it.
Wasn't Far Cry 3 as well? About joining a tribe of natives and spurning the trappings of civilization?
I think a lot of games seem to take inspiration from it though, unlike Spec Ops, most put you more in Kurtz's place instead of Marlow's. Actually, the book isn't widely known where I live, so it was from people mentioning it in regards to games that got me to know it, and later, read it.