Tells the story of a young boy called Robert who is the sole survivor of a plane crash in "the Gap". Too young to fend for himself, Robert is adopted by a local group of Indigenous Australians, who teach him the skills he needs to survive in this harsh new environment...
I'm definitely biased, being a hard-core adventure gamer, but Steel Sky may well be one of the best games ever made. If not that, then the best dystopian adventure game at least. How well it holds up is highly dependant on nostalgia (and without nostalgia... well, then patience and a dark sense of humor).