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Games with a distinctive mood, with themes of romance, mystery, or nostalgia

Games that defy the traditional approach to game design and offer unique, interesting and often strange experiences.

Taking place after a huge catastrophe (eg. man made or natural disaster). See also the more political theme dystopian.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

Games which have short playtimes and can usually be completed in one sitting.

Games that can be played alone