Remodeling contractor/designer. Discussing ideas and plans with homeowners is a psychological trip and you’ll have to use math to show them visually why they’re wrong. You also mentioned non professional, but this could also be a hobby where you only take on a few projects a year and get more personal with your clients.
On the topic of games, Stick Fight The Game is $5 on steam and I got it while drinking with a few friends. It was the most fun I’ve had in years. I also hop on randomly when I get a chance and it’s just as fun with random people.