Hi guys, We are thinking about promoting a competition to help launch our mobile game. The prizepool will be ~$10,000 USD and it will be free to enter. It will be available worldwide and the winner will be paid through PayPal. The winners will be decided based on skill - how well they score in our game. We will verify results through Apple's Game Center. My question is: Is this legal and are there any fees/forms/certificates I need to attain to promote this competition? Thanks!