Devious Mundanity is a spinoff from Devious World. Like its original, it is a Choose Your Own Adventure story-based game. There are no stats, no grinding, just your choices and where they lead you in the story.
It is also an adult game, intended for mature audiences. It is entirely a work of fiction; all characters are fictional, all situations are fictional, nothing is drawn from real life. Fantasy is heavily stressed over reality. All characters are written by a legal adult, so should be considered to be portrayed by legal adults whatever their stated ages in the narrative may be.
Devious World is based off of the concept of normal people who grew up leading normal lives suddenly having to deal with a very strange world. Devious Mundanity focuses on the inverse... people who are already "out of the norm" who have to deal with a (nominally) mundane world, or for whom the deviant is everyday. In Devious World, it's the people who are normal and the world that's the challenge... here in Devious Mundanity, it's the people who are devious and, well, the world can still be a bit of a challenge. Of course it's not guaranteed to stay normal for long... not after these characters get ahold of it!
Once you the player make a choice, the character lives in a world where only what happens and what they learn from that choice exists... the world as it is following one choice could be completely different than the one in which they made another choice. Storylines are not canon to each other.