3D Halloween Slots is part of a series of seasonal/holiday slot games published by Piggyback.com. Also available are Christmas Slots, New Year Slots, Valentine, St. Patrick's Day and Easter Slots, with more to be released soon. This is a one payline slot machine game. Up to three coins can be bet on each spin. Winnings are based on the symbols on the payline and the number of coins being bet. There are also several bonus features which make 3D Halloween Slots very fun and also adds an element of skill to the game.