To recover your RealmExplorer cd-key from Desura, please follow these steps:

  1. Install the Desura client if you do not have it installed
    1. http://www.desura.com/install
  2. Login to the Desura client software on your PC
  3. Click the “Play” tab and find the “removed-removed non / removed” game in your list:
  4. Right click it and select “View CD-Key”
  5. Your CD-key will appear in the dialog: