It might be placebo effect but my mood is more stable. There's research that shows it works as well as SSRIs but then other research that says it's bunk.
It's not a giant benefit but I don't fly off the handle as easily so that helps.
My cousin who is 11 years my senior taught me the patented "blow into the Double Dragon cartridge" technique when I'd go to his house and play on the NES.
It was cool.