Rollercoaster Online Poker
In Rollercoaster Online Poker, players are dealt one card at a time, betting after each card, alternately competing for high or low hand. After the ante, each player is dealt one card face down, which they can look at. For this first hand, players are competing for the highest card. To allow players to simultaneously indicate if they are going to compete for the pot, everyone secretly puts a coin in their hand to indicate they are competing or doesn't to indicate they are not competing.
Everyone puts their closed fist on the table and opens them at the same time. Players who did not compete risk nothing and gain nothing. Players who did compete swap their cards to determine who wins - the other players do not get to see the competing players' cards. The player with the highest hand takes the pot. The competing players who lost have to match the pot. If there is a tie or no one stayed in, the pot carries over.
The Online Poker dealer then deals one more card face down to each player, which everyone adds to their hands. This time players are competing for the lowest hand (just like in Low Ball). Again each player simultaneously indicates if they are competing by secretly placing a coin in their hand to indicate they are staying. Competing players again swap hands to determine the winner with the lowest hand taking the pot. Losing players match the pot - non-competing players do nothing. After the third card, players compete for highest hand the same way. After the fourth card, players compete for lowest hand the same way. After the final card, there is a showdown (with everyone automatically competing). The highest hand takes the pot and the game is over. As the rules are stated, if only a single player competes for a hand, he takes the Online Poker pot and there is no pot for the next competition.