Not a bad design in the top center but the bottom : "all best game on this site" That section is not at all eye catching and attractive Also in the right of the header there should be some good image or something.
I think its a little too dark and gloomy. Seeing as game sites are aimed at having fun maybe it should be a little more colourful and wel....fun!
Adsense is nicely implemented, but the design could be a bit more... umm... following the recent design trends. I don't like these glossy things as content boxes and I think that You could have easily spend more than 3 minutes designing your logo in PS. PS is not just blending mode options
i think the design is not that bad, maybe use rounded corners... games = good, i submitted my website too, gamegoldies.org .