Well, you're right, of course, it is a free game. Won't cost you a penny to play. Might cost you a few dollars to upgrade your equipment, but that's on you of course... your choice all the way.
But, even the free games have TERMS AND CONDITIONS that the owners set forth that you must agree with in order to play in their sandbox, so to speak. One of those is:
Each user participating at WORLD GOLF TOUR (WGT) may have only one player account. If you wish to create a new player account, please contact us at support@worldgolftour.com. If World Golf Tour determines that you have more than one account, all accounts created subsequent to the first account may be automatically terminated without notice. Continued violation of the Terms & Conditions, including the creation of more than one player account, may result in the termination of all of your player accounts.
See, when you get into winning contests and making money, even in a FREE GAME, if you have to cheat to do it, it's considered illegal.
Not that I'm accusing anyone... just making a point.