Steambot Chronicles is the main one. I just love upgrading the trots in different styles to suit the task and even get addicted to the often poor musical rhythm mini-games. I think the characters are some of the best characters in any game.
What other game has a parody of the Wright brothers trying to create flying mechs?
Great article, i am always trying to find games with deeper more mature storytelling and this is the exact sort of thing I mean.
In the almost list you mention soul reaver but really it needs to be viewed as part of a whole. It i the whole series of legacy of Kain games that explore a whole range of mature topics.
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