I'd advise against playing games in your free time since you can use it for much better stuff..
But if you must, why not play games and learn things at the same time? Khan Academy, Duolingo, Memrise, Codecademy are all "gaming apps" that gamify the learning experience. Plus they come in bite-sized 3-5 minute modules so it' perfect for the commute.
Maybe, but work is hard enough as it is in terms of learning, and I'd rather do lighter activities in that case. That said, I have done Duolingo and agree that it's great.
sure thing!
Well sorry i can't help you in that case..