This just in:
Platinum Play is offering an interesting promotion.
Free Play Worth $200, Pocket Your Wins
They give you a $200 balance with no purchase required. You play slots with that money, wagering through at least once. Any part of your ending balance that is above the initial $200, you can transfer into your real money account. The maximum you can transfer is $200, and you'll have to make a real deposit of at least $20 before you can transfer the winnings.
So, you get a free shot at using $200 at the slots to generate some profit, and if you accomplish a decent total you'll need to deposit a small amount to transfer the profit portion to your real balance.
Wagering requirements apply on your deposit and on the transferred total. The free money is subject to 20x wagering, and video poker, craps, baccarat, roulette and sic bo don't count. Blackjack can be used for up to 20% of the required wagering. Slots and other table games will need to be used for the remainder.
Since no purchase is required upfront, this is like a freeroll to generate a big bonus. If you luck up and hit something big, then you can decide whether it makes sense to deposit to capture the profit and be subject to the wagering requirements.
Visit the Platinum Play website for all the details.