HUGE site, tons of scrolling, i'd rather see content driven menus or drop downs to get to where i want to be, rather than having to scroll through your entire page.
Revamp the game categories into nav buttons rather than just text, it should help by finding games and emphasize that there are other ways to look for what i want to play.
Nice integration of the "Add site to:..." and the games played today is pretty sweet as well.
The backdrop is a bit boring, try to switch it up some and work with something that's visually subliminal (watermarks of different games) or otherwise entertaining but doesn't take away from your content.
Overall: :tu: 1/3