Caribbean Stud Poker

Using optimal strategy the house edge is 5.224% of the player's ante bet. This strategy can be complicated and does not lend itself to practical use in a casino. Using a strategy of raising with Ace/King/Jack/8/3 or better the house edge is 5.316%, very close to the optimal strategy house edge.

Knowledge of what other players hold can decrease the house edge. It has been estimated with the knowledge of 6 other player's hands (30 cards) and associated optimal strategy the player can gain an edge of 2.3%. Given that sharing information is against the rules and that a computer would be needed to calculate the appropriate strategy it is unlikely this could ever be achieved in a real life casino.

From Wikipedia's