Does anyone else think that 70s and 80s arcade games have a certain eeriness to them?

It may sound a bit strange; I'm not sure how to explain it. I don't know if it's the backgrounds or the music and sound effects, but a lot of classic titles are just a bit eerie. For example, games like Qix and Centipede or even Pac-Man and DigDug are totally harmless, but I would feel strangely uncomfortable playing them in the dark for some reason. Anyone know what I'm talking about?