Extremely narrow template which subsequently leads you to using a very small font.
The only way to see actual images associated with a game is by clicking on one of the drop down tabs on your site. Chances are that people are not looking past the narrow template/small font and click away before they get there. Check your exit stats in AWSTATS or Google Analytics, it should give you a good idea what's going on and where people leave your site.
The animated nav tabs are kinda interesting, but cannot hold your site alone.
Your logo could use some cleaning up, the tag line below could/should stretch underneath the width of GamePixel.
M.