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There is a real study that shows that Tetris can help prevent PTSD:

https://www.ox.ac.uk/news/2017-03-28-post-traumatic-stress-s...

I haven't read about this thoroughly but I think the theory is that the Tetris Effect that we all hate literally blocks the formation of traumatic memories.

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That makes total sense, if Tetris is something your brain prioritises when consolidating memory during sleep then it will take up bandwidth from the traumatic event and block it from being consolidated.

I wonder if there's something in that, where people try to distract themselves in their every day life with these games, perhaps it's an instinctive way of reducing trauma.

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