yes, I have some of those
I don't know if I'm obsessed. I often think about it, or wish I could speak to my friends about it instead of talking about their obsessions (currently, when I meet with friends, a lot of time is spent talking about DotA games they recently played, or the last changelogs or how I should play with them even if I hate losing games and I'm bad at the game, just for the company)
I don't put the game in front of going out with my friends or helping family. I might have a more general PC addiction since I'd rather chat somewhere than relax and recover from neck pain, and there are times when I'd like to stay home and play rather than get up, get out and get togheter, but I almost never refuse doing other things.
There have been times when I compulsively tried to level up fast, think lots of farming in a mmorpg, but nowadays I only play when I like doing it (even if not being there as much as others makes me feel worse than them sometimes).
Withdrawal, I don't think. I've passed some years without playing, because I couldn't, and I didn't particularly want to. There are also times when I don't play for a week or so, because I don't feel motivated to do so. Then someone I like playing with asks me and I usually say yes.
Loss of control... maybe. I sometimes lose track of time but it's rare and it's when I can allow it.
Denies problems? No. I just wish those were not problems. But I'm a stupid boy who'd rather wish there was some kind of perfect world where good things just happened instead of this thing we need to thrive in so this kinda fits in, I guess.
Hides the behavior - sometimes: I don't like my dad constantly reminding me I should do other things (not things I forget to do, but things I don't really like doing) so I don't really say out loud when I'm gaming. Also, I indulge in games I'm not comfortable with friends knowing about them, but I don't think it has something to do with not wanting them to know that I, in general, waste my time playing games.
blackouts? Ah, somebody should tell me, I think no but it's hard to say.
Low self exteem and anxiety? Lots of. Bad parenting? I don't think so.
[copies the whole thing into a file and sends it to a therapist friend he knows from those games]
Anyway, I must be addicted to the brain chemicals that make me feel miserable. I've been told my gaming is not masochism.
And now I go playing a game of one of those games that start and end in less than one hour, just in the hope of gaining some more in-game currency to amass for the moment I can buy every additional content, which will never happen unless I play like 5 hours a day every day