I'm quoting two excerpts in order to highlight some of the key ideas and give you a taste of this excellent argument. Consider his thesis:
The major difference between Tetris and other games is the simplicity of its construction and complexity of play. Most importantly, it is a game that does not have a goal or end. There is no castle to storm or high score to achieve – the only way to end your game is to lose. The result of this simple and mildly daunting setup is that Tetris affords the user a repetitive task every time he or she picks it up: to play better than the last time. It has also been shown to have beneficial effects outside the game itself, making it a powerful tool for personal development, mirroring certain aspects of Confucian ritual.
Another interesting quote:
This fixity is a bolstering against any pull of temptation or obsessions, which distract from true virtue and reinforce human limitations. This, I would say, is expressed in certain methods of playing Tetris: if one is responsive to the natural structure of the game and plays it with a will to learn rather than overcome, Tetris can be a method of personal cultivation. It is a matter of finding one’s balance and then responding instantaneously to a number of stimuli, letting all affect the outcome for the better.
At any rate, definitely check it out!