I’ll give my critique from a designer standpoint. There’s not enough consistency and things that should stand out don’t. The logo for example: The word “games” stands out more than the actual title. You want people’s attention to be on the main part of the logo, not “games”, “studio” or whatever other ending. The transparency in the green text “Generation Nation” causes it to look cheap and cluttered because of the shadow behind it. I would get rid of the transparency, and possibly move the shadow closer so it’s not as cluttered. The white double border around the logo also looks bad. It is too bright for the dark colors (making it stand out too much), there’s no space between the box and the nav bar, and well… it just doesn’t look nice. In my opinion, it would look better if the logo was not boxed in at all but that’s me. In the same respect, the border around the topics is also too contrasting. As for the navigation bar. Light grey on light green (when scrolling over the nav links) is fugly. The navigation text also doesnt stand out enough when compared to other fonts on the site. You don’t want this. Make the text bold (or bigger) and make them at least as bright as your main page headers. (I realize this would mean changing the nav bar bg color, but it’s something to consider)
As far as the colors. The grey that you’ve chosen really clashes with the green colors. If you want to use grey, try at least giving the grey a hue that blends more with the greens you have. A second color that isn’t neutral would also make the site nicer to look at. (Instead of being mostly green) As long as it’s not in just one place.
Overall I think it’s an alright attempt at a site, as far as layout goes. But, it fails to be interesting to look at and like a cheap site from the early 90’s. I’m not implying it has to be fancy by any means. I’ll show you two professional game company websites that are simple yet nice to look at:
1. Perfectworld http://www.perfectworld.com/ - The logo is simple but it stands out. There are borders but they match the color scheme. And the use of gradients in some spots really gives the site character. The navigation bar can’t be missed, flows with the rest of the page and has nice rollovers.
2. Nexon http://nexon.net/ - Again, simple logo but it stands out well. There is next to no borders and yet the page flows nicely, due to a well chosen color scheme (just plain ole blue and off-white but it’s nice to look at) and little touches like the shadow under the top navigation area and footer which give the sections depth.
These are just a couple examples, but there are plenty more like these that show how you can stick to a simple layout (as you have) and still have a great looking site. My suggestion is to look at as many professional game sites as you can, see what makes them good, and take ideas from them.