Deleting Farmville can be a pain, especially if you allowed it from a site like Facebook.
Since there is no way to remove Farmville in one go, you can remove it from Facebook using these instructions.
1. Go to http://www.facebook.com/settings/?tab=applications or right click on the arrow on the top right of the page, next to your name, and click ‘account settings’ and choose ‘apps’ from the menu on the left.
2. Click the cross next to Farmville and confirm to remove it completely.
Farmville also connects to other services like MSN. To delete Farmville from MSN, please see our tutorial on removing MSN games: https://www.accountkiller.com/en/delete-msn-games-account