Since the release of MSN version 6.1 there has been no ability to play games on msn anymore. Now someone made a patch for it and placed it on the internet. :) This patch adds the following games:

Chess 9 Men Morris Sea Battle and a few others Note: If you want to play games both the MSN players have to install the patch.

Download : MSN Messenger 6.1 Games patch thanks Betaresource for the link.

Source: Mess.be