My mum won't play Minecraft with me
I did get her and my dad at different times to play Call of Duty and Rockband

My Papa, whos roughly 70 and in bad shape from the Army and smoking, managed to successfully play a song on drums (Hard difficulty). I was impressed because he had a walking stick at the time but managed to keep up with at least 75% of the bass notes.

I've never played games with my parents but my dad decided to learn 3d modeling a few months ago and now we're working together on a few 3d scenes.

I did get my dad to play a few Portal levels and he loved it but didn't finish the game.