Hi,
Example:
http://www.nepalhub.com/arcade.php
Once a certain number of games are added, there is no need for new games, and also hard to find. So if possible, on the right hand side, left hand side, where "newest games" and "most played games" are shown, a possibility to show "random games" too .. and also the possibility to show 4-5 random games on other domains which others can include in their website and send gamers to the arcade.
Also, a points system that awards points only if somone else's record is broken. There are some players that keep on breaking their own record and in the same games. An award system when someone else's record is broken will make players try all games.