Patanoir is a wordplay game with a unique game mechanic: you can take and place similes. If someone is cold as ice, for example, you can take the ice, leaving a warmer, friendlier person. You can then drop the ice somewhere else, making the atmosphere in a room cold as ice.
The story itself is frankly unimportant. It is shoehorned in simply because the detective genre uses a lot of similes. Seemingly tense conversations can be left and returned to hundreds of turns later with no problems.
The game is mid-length, requiring a few hours to play. I found it very enjoyable to walk around with pockets full of similes, looking for a place to drop them.
The only game really like it is Counterfeit Monkey or possibly Ad Verbum, but each is different enough from this game to make it unique.