PHP-Nuke is one of the older PHP/MySQL Content Management Systems. It has an extensible module system, so you can extend the core functionality of the CMS by writing modules. Like PostNuke, plugins for PHP-Nuke are called "modules".
The pnFlashGames compatible arcade module for PHPNuke is called "FlashGames" and was written and is maintained by Kent Battfield.
Download PHP-Nuke Flash_Games Module
Sample PHP-Nuke Flash_Games Module installation
View reviews and demos of PHP-Nuke
To download PHP-Nuke, Visit the PHP-Nuke Homepage