The Wild Card will allow you to play any card left on the tableau. Wild Cards can be purchased or won. The number of available Wild Cards is located in the lower right hand corner of the game screen.

Free Plays are exactly what they sound like. If you win or buy a Free Play ticket, you'll see it on top of the Coin Entry fee when you start a level - you won't have to pay any Coins to play that level.

Wild Cards:

Free Plays: