ok, for example, add more sections with information about the game, (maybe screenshots). I mean, people like to see and read what its all about before they sign up right?. Fix the forums page.
Instead of "http://www.scornedmon********/game/game.php" make it
www.something.com (subdirectories make it look poor).
Work a bit on the site graphs, that banner looks tottally out of place.
How about making the site under phpnuke?
I just want to make it clear im not trying to offen you here, just trying to help you.