I have some games installed on my Pc. I have a lot more games on my iPhone. I prefer to play games on my phone or tablet. It is just a more natural way of playing.
I play mobile games the most. I always have my phone with me. I play them when I'm bored. Mainly I play a game on my phone when I'm trying to sleep or on my break at work. It is a lot easier to just pull out my phone than to find a disk and pop it in my x box.