An instant lottery ticket game structure and method includes a set of instant lottery tickets, wherein a plurality of these tickets are winning tickets having a predetermined first prize value, as well as a predetermined enhanced second prize value. A first validation file is maintained in a central host computer having a primary record for each winning ticket, the primary record including ticket identification data and the predetermined first prize value. A second validation file maintained by a computer includes a base record for each winning ticket having the prize enhancement code for the winning ticket and the second prize value assigned to the winning ticket. A logic gate in the base record automatically activates upon entry of the prize enhancement code, wherein the computer creates a final record for the winning ticket by modifying the base record to include the second prize value as a final prize value. The first validation file is periodically updated with the final records.