Tetris has been proven useful against PTSD's. Pokémon has a chilly futuristic world to explore, full of fun, and it has a replayable value, among discrete/after end-game combats such as the Battle Tower which is not about grinding levels but to raising them to a concrete value from 10 to 100 and choosing any monster you like.
https://theconversation.com/can-playing-tetris-help-prevent-...