Tetris has affects the human brain strangely, whether it’s with afterimages or blocking traumatic experiences. Tom Stafford at Mind Hacks theorizes that the appeal of Tetris lies in its continual presentation of unfinished tasks… much like popular RPGs, only without any pretenses. Tetris holds our attention by continually creating unfinished tasks. Each action in the game allows us to solve part of the puzzle, filling up a row or rows completely so that they disappear, but is also just as likely to create new, unfinished work. A chain of these partial-solutions and newly triggered unsolved tasks can easily stretch to hours,…