Go to the clickteam forums at clickteam.com. There you could probably find someone to make game of similar quality for your site for a good price. Or, if you get Multi media Fusion pro dev II you could write your own multiplayer online game as good and detailed as you want with very little knowledge of coding.

Many flash games are made using this method. It is fast and simple amd cheap, and the results can be amazing.
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.