From the Blue Orange Games website:

Bluffing has never been this Fun ! Bluffer, Bluster and Bluffie get ready for some extreme bluffing as they race to be the first to get rid of all cards in their hands. Taking turns, players can match the last card played, draw or... bluff as all cards are played face down ! But watch out ! Don´t get caught bluffing because Bluff Busters are always on the watch