NO WAY!
I'm a 26 yr old university student in her sophomore year, and I feel no shame in playing games like these for the times I play video games.
But I think it can be awkward sometimes. This past Sunday night, I joined a Hangouts group to chat while we all played Splatoon together, and I could tell just by the way they spoke that they were around the age of highschool kids or maybe younger.
To be fair, I can get away with people thinking I'm a highschool kid because I get told all the time that I sound very young over the phone. :p