If you have lost your key but still have proof of purchase, you can contact the developers directly: Support Email : Send an email to administration@shipsim.com
: This is often required for the Windows user account to properly validate and save the license key data to your registry. Quick Tips for Version 1.4.2: Physical Keys : Check the back of the manual inside your CD case for the XXXXX-XXXXX-XXXXX-XXXXX-XXXXX Steam Version Serial Key For Ship Simulator 2008 1.4.2