itik and shatrughna77, there are no records for a completed purchase of this game (or any game) for your accounts. If you're purchased the game elsewhere, please specify all the details for we can help figure this out for you.
ann marie, I see that you purchased the game back in January. To download the installation file, you will need to login to your account, then select the 'Your Games' tab at the top of the screen, and from there you will see your purchased games in a list. You can choose the PC or Mac download link for Jurassic Park, so make sure you pick the correct one for your system.