I was struck by the observation that the order of episodes doesn't really matter in stories like Don Quixote, let alone TV soap operas. I think Lee Sheldon made this observation in a book he wrote. So I was tempted to do a work of interactive fiction where the player apparently has real choices, but all those choices do is drive the order they experience the episodes in.
I don't claim this is an original idea, one of the laws I remember from my university days is if you think you've discovered something new then either someone's already discovered it or you're wrong. But I want to do some kind of game, and a story with multiple paths through it appeals on an aesthetic level to me.
Mug. Missing. is not remotely serious. Achieving a polymorphic story is easier if one can abandon realism or sense to start with.
Mug. Missing. is implemented in a custom DSL transcompiled to Tweego input files. Ruby code is used to do this transcompilation, it's in a Github repository.