Gaming is fine in a casual dosage, if you're addicted you deserve to be dumped, and if you mention it as one of your hobbies people will rightly consider you to be the latter of the two.
I used to do sports, martial arts and hip-hop dancing classes back in the first year, but nowadays my time is severely limited outside of studies and work, so either watching movies or playing some offline game is suitable for those 1-2 hour intervals, and works out quite alright. But is it a hobby? No, it's a pastime.
And haven't really watched the telly for several years now, too many bleeding commercials and not a fan of adhering to scheduled programs.