I used to play a lot of video games, and although I still play many, I have cut down. I remember a while back I was on a retreat for a week or so, and the first thing I did when I got home was pull up to my computer and start playing Counter Strike, which is a first-person shooter. I played for five minutes and I just felt agitated and tense; the concentration and mindfulness I had built up during the previous week did not mesh well with such an action packed, violent experience. I can't say all video games are bad but certainly they require a certain amount of heedlessness. My guess is that as you meditate more, your desire for the more coarse joys will come less and less.
I would recommend you:
1. Don't play video games right before or right after you meditate. Try and meditate first thing in the morning perhaps, or at least try and sit after doing something that is relatively peaceful and relaxing in its own right, like taking a shower or reading a book.
2. Try and limit your time and see how easy it is for you. I found that most of the games I played, I did it just to fill time. I got down to about an hour a day before I really started "missing" anything.
3. Consider trying to increase the frequency of your meditation or even replace a certain portion of your video gaming time with meditation instead. When you're trying to do something less, it's helpful to replace it with another activity instead of just leaving that hole there.
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti Sutta