Howdee Ho!
I invented a South Park themed Concentration game.
Just follow this link and play... http://www.geocities.com/SunsetStrip/4656/21concen.htm
You must have Netscape 3 or better, Javascript enabled and auto image loading in order to play.
Sorry IE users. I haven't been able to get someone to write one that would work in your browsers, but you can download a Netscape browser for free and then play.
REMOVE THE YAHOO TO RESPOND