I improved the game and functionality over time. The game has always been above the fold, but the content was greatly revise this past year. I've been doing a lot of optimizations on the game, but nothing big. After all, it's limited how much innovation can be done a game like that .
Did you start having only the game at first above the fold and then added more content below? How did it evolve over time?
It looks like SEO drives most of your traffic.