When we were first married, my husband played as soon as he got home from school and work. He only got about 3 hours of sleep at night and ignored me our entire first two years of marriage. On an average day, he would play over 12 hours and an an average weekend, he would play about 40 hours.
There were even nights he stayed over at his parents house playing with his dad and I wouldn't see him for a whole day or two later.
Amazingly, I got pregnant (lol) and his gaming got worse. Not only that, but gaming for that long turns a person into a cranky, controlling, aggressive person, so the rare times he was aware in our relationship... he was mean and nasty, and started to become abusive.
To make matter worse, he wore a boom headset so that he is totally unaware. I could be dying and moaning and on fire right next to him and he wouldn't have a clue b/c of those headsets.
I actually left him, 8 months pregnant. I took him back under the conditions that he put a major time limit on his games and had a major behavior change.
It was a huge addiction that was ruining our lives. We only had one tv and no computer at the time, so I just sat alone for hours on end and cried. Really, it is the online gaming where people are calling him up and asking him to get on, inviting him to more parties and such that kept it going. But, these people have addictions too and probably no life or unhappy families as well.
Well, that was 7 years ago, and though we have had several relapses and my phases of internet addiction to deal with as a result of being ignored... we are still together with 2 children now and are quite happy.
We put nice little rules on the times he was allowed to play, but his addiction just started to creep back and then after another year, we had to get tough to nip it in the bud. Oh, and when he wasn't gaming, he was online at gaming sites looking up new reviews/games/conferences...
What we did was:
1. Sold all of his games except for his 2 or 3 favorites (we only did that maybe a year ago but I wished we had done it sooner).
2. He was only allowed to play for so many hours a day. Like another mom said, he had to eat with us and go to bed with us. No playing at all on Sundays b/c that was family day and Saturdays he could play all he wanted, so long as he helped with chores, cooking, being a parent, going to family outings...
3. Game content, when we had kids, I did not want certain violent games around my children. Those games are reserved for after kids go to bed, and I am even picky about what is allowed in. No scary zombies, evil weird gory games or with excessive cussing (he didn't play them much to begin with). First person shooter and such are okay.
4. An addiction cannot be overcome until it is replaced with something else. My husband got another hobby to help distract him. Also, playing to destress is okay, but if it is a game that causes stress, eliminate it and replace that with another activity or game.
5. We made more date nights, more outings with the family, anything to get us out of the house and away from the games.
6. We found a game we liked to play together. As odd as it sounds in our situation, we liked playing Fable or ezmuze or Mario and stuff together or with the kids. It helps him replace the game time as HIS time and turns it into a family activity.
As far as this statement, "because there's no save point until I finish this section'"... I would just go and turn it off and say that life doesn't have a save-point either. Well, first I would ask him to stop then at the next check-point and he would just start the cycle back up again.
Oh, we also had professional marriage counseling.
One thing my husband told me after he had his addiction under control, is that it didn't make him happy. He used it as an escape from life and that escape only made everything worse.
Also, now, he only plays for about 3 hours a night only about 3 nights a week. Uninterrupted and when the kids are asleep, and some weekends he plays more. He is a happier and more successful person as a result.
This talk is pretty long and on a religious note, but it helped my husband see how detrimental the gaming was to not only our family and relationship, but to him as an individual as well.
Good luck, it is a very tough road and I hope you all make it through it.