This is because free online slots and casino games are often found at social casino sites and sweepstakes casinos, and they use 'coins' for freeplay rather than real money.
When it comes to free online games, it can sometimes be easier to find a no deposit bonus and other casino bonuses, to play slots and casino gams. How to Find a Free Coins Bonus or a No Deposit Bonus.No Deposit Bonus and Free Coins at Sweepstakes Casinos & Social Casino Sites.The Best No Deposit Bonuses at Social Casinos.