The only time I experienced the Tetris effect was when the first Puzzle Quest came. I got so addicted to it I played it 48 hours straight on a weekend with their respective sleep, eat and bathroom breaks. On the third day not only I developed a small inflammation on one hand carpal tunnel, every time I closed my eyes all I saw was me aligning skulls. Never again.
I used to dream with programming lines of code at night too. Now sometimes I have dreams about me sending fleets to expeditions once in a while.
I had a dream about getting Tamamo last night, since its her pickup in NA right now. I remember thinking to myself, 'yes, this is actually happening',before I woke up and was filled with sadness.
Then like less than an hour later I did a ten pull and there she was.