The main demographic for video games is YOUNG GUYS. But there's a video online of an old, white-haired British lady playing "Grand Theft Auto 5".

She's walking around punching people and spraying bullets at crowds...and REALLY getting into it.

According to the YouTube description, her gas bill went up and she wanted to let off some steam.  But she also seems to legitimately enjoy it.  

(WARNING!!! There's some unbleeped profanity from the people she's terrorizing in the game.)