I got it! To play games with the dcr extention go to add Game in admin just like you would with a swf game.
Code for classid/codebase
Enter the classid="..." and codebase="..." parameters here, separated by a space is
classid="clsid
27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave /cabs/flash/swflash.cab#version=6,0,65,0"
EMBED Tag Parameters is
pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=Shockwave"
Hope this helps someone else