As said, what sort of games dev? Many aspects, with many sub-aspects. Programming, 3d modelling/animation, level design, game design, audio, blah blah.
I did a Games Computing (Software Development) degree, and it was a load of cack. Would have been better off not going, aside from the whole social thing of uni. If you are good at a particular part, then you could try going without qualifications, though the sad truth is that you usually need a degree to get past HR, so go for the piece of paper and chase girls around (not that there will be any on a computing course).
Also, the industry is a big pile of exploitative ____ at the moment, and not an industry I'd like to be in. I'm in straight up 3d animation now, and I don't have to do 60 hour weeks for basically no money. (I do 35 hours a week for basically no money haha)...