Yeah, 100%. I mean, if you're having a stressful day, you can escape from reality and play games, but if you play it too much or rely on it too much then it could be bad for your mental health, so it depends.
Does gaming improve mental health? Hell yeah man! It stimulates the mind. Like really, it takes your mind off things. And sometimes people, you know, play games to not think about the hardships in life. Yeah, most definitely.