Playing Tetris after a traumatic event can help eliminate bad memories. A study of car wreck survivors found that those who played Tetris in the ER had 62% fewer bad memories than those who just wrote down what happened. Their memories also faded more quickly, so it’s believed that Tetris both distracts you from taking pity on yourself, and interferes with the way long-term memories are stored. Source Source 2
Fucking Tetris can be used therapeutically
I’ve always loved playing Tetris, and I have to agree. It can be very relaxing as you just focus on the colours of the pieces and how the fit together. It’s the same reason why psych wards also tend to keep puzzle games for the patients.