FreePlay is based upon your previous playing history. It can generally take 2-3 months for your offers to reflect your most recent play. Contrary to popular belief, generally the amount that you are gifted has nothing to do with how little or how much money you win or lose. It's all about timing!
Here's where and how you can do this: Online Casino Websites: Some online casinos offer free versions of their slot games to give players a taste of what they can expect. In many cases, you don't need to create an account to access these free games.
Generally, slot/video poker free play credits convert to real money after being played once - i.e. you'll get R$10 slot credit, then you play R$10 worth of spins, any winnings are now real cash.
Free spins are bonuses at casinos that allow you to play slot games without betting your own money, offering a chance to win real money under certain terms and conditions.