The Brass Teapot (2012) is a lovely dark comedy built around a magic item, or a cursed item, take your choice. It is a story about people and the price they are willing to pay for success. I do not wish to say much more because watching the story unfold is quite fun. Do watch the alternate opening once you have watched the movie, otherwise it will set up expectations that will not be fulfilled.
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And a discussion with spoilers:
Sea of Stars RPG Design Journal 