Note: All links can also be find on the Adobe website if you have the time and desire to search for them.
As you may know there's an problem with newer versions of Flash that cause the game to crash when you play Mirror mode. I've been experimenting for a while and I can offer a quick (sort of) solution. You just need to uninstall the Flash player you have at the moment and install an older one. It is best to remove it with the Flash Uninstaller (this one is for versions 11.4 and below, but should work at least till Flash 12). Be sure you have all your browsers' windows closed. After that you have to install an older Flash (I've picked 10.22 as it didn't crash several games and is still new enough for most of the websites). Download and install for Internet Explorer or Firefox, Opera, Safari. I don't know how to fix it for Chrome as it installs flash automatically.
Here is a random game I played with that version.
WARNING! If you're using Firefox's setting "Open my windows from the last time" they may disappear after you uninstall/install the new Flash. Be sure to bookmark your links (because I lost hundreds xD )