I also have to carefully control my maladaptive daydreaming. Having two children has kept me in the real world more recently but I do crave the me time for a daydream. I also have snuck off for a 'nap' before but just wanted a dream.
Mine are based on a number of things, my earliest are based on real tv shows where I'm the lead character (usually male) and I make up new storylines for me and my fellow cast to playout. I would be mortified if people knew the level of obsession with one particular show. Fortunately I have diversified in recent years.
I also recently started a new one where I've won the lottery and the businesses I would start and who I would give money away to.
I also have about 3/4 running that are completely unique fantasy stories that I'm slowly turning into reality by writing them down.
My field is 3d design and im hoping to move into an game artist role. Some of my stories have strong visual themes that planning to use as a narrative themed portfolio of images to help me get back to work. (Currently have 8month old baby).
Settings for my stories are,
a Dickensian type misty canaled city. Our protagonist is an orphan who is gains an unusual power.
A desert town overlooking a dry sea, the residents live in homes carved from the rock.
A nation slowly being invaded by a powerful army over generations. The two sides have a kind of mental magic that both use indifferent ways offensively. Our main character is an iligitimate child of two people on different sides of the war, this means she gains elements of both sides if the magic.
Three worlds with different physics that feed on each other's energy in a cycle. energy consumption in one effects the others. Individuals in these worlds start to realise something is up and the story is the discovery of each other's worlds and their connection. Dark powers seek to use these energy for ill intend while draining other worlds of their energy.