I usually play at night, sometimes when I am stuck at a level or the game is at really interesting juncture, I can spend the night awake playing.
I try to play for 1 hour max. But at times I can play up to five hours. D: I think it's okay though. I used to be able to play whole day. Not good!
Wow. Thirty minutes a day? That's amazing. D: I wish I could only play that long. But it's so...hard especially if the game is way too compelling. Self control I suppose.
If sign in and browse new post in this lovely forum is one of game, I did it up to 2 hours maybe much more
Back when I was still in school and doing part time jobs, I would spend over 18 hours a day playing games. But now, with my work, I get to spend about an hour or so when schedule permits.