here's a way on how to know if you're going to get a prize or not from the lost desert scratchcard:
1. When you're on the page to scratch the card, view the page source.
2. The press CTRL+F and type in the word prize.
3. Then press enter 2 times.
4. If you're going to win a prize, it should say this:
%22%3EClick+Here+to+claim+your+prize%21%3C%2
its not a cheat actually but its quite fun to know if you're going to win or not even before you scratch the card.