I do the same, video game sessions are great for refocusing, specially for weekends. Friday night gaming will take my mind off work. Early Saturday exercise allows me to start the weekend well. Given that I can leave your laptop at work, I try to have another computer at home so there is no way for me to access work email. I also snooze all work notifications in my phone. That gives me space to work on my own projects during the weekend and reclaim my mind's focus.

Gaming is just one of the things but an important activity.