The best 3 card hand wins with this ranking: high card, pair, flush, straight, trips, straight flush (why is straight ranked higher than flush? See the probabilities of 3 card poker at the bottom of this page.) After receiving and looking at cards each player must decide if they wish to drop out or stay in the game. There is no draw there are no common cards.
There is an initial ante, but no further betting. 3 Card Drop Poker is a simple three card poker game, but posses a potentially high risk. HOW TO PLAY 3 CARD DROP POKER (Long Version):