... or at least Tetris is, if you're suffering from PTSD:
Playing the computer puzzle game Tetris can help reduce the effects of traumatic stress, UK researchers say.
Volunteers were exposed to distressing images, with some given the game to play 30 minutes later, the PLoS One journal reported.
Players had fewer "flashbacks", perhaps because it helped disrupt the laying down of memories, said the scientists.
It is hoped the study could aid the development of new strategies for minimising the impact of trauma.
However, the researchers accept translating their findings into practical applications could prove difficult.
From the Beeb. I imagine playing Call of Duty wouldn't be quite so therapeutic...